u/Mastbubbles

A cool guide to the 8 hardest stains to remove, ranked by difficulty across 8 different surfaces
🔥 Hot ▲ 278 r/coolguides

A cool guide to the 8 hardest stains to remove, ranked by difficulty across 8 different surfaces

Every time someone spills wine at a restaurant or gets coffee on their shirt at a cafe, I'm the one who panics and be like "PLEASE DON'T RUB" and Hair dye is the one that breaks me the most.

So I finally sat down, went through cleaning sources (Good Housekeeping, Martha Stewart, university extension guides, IICRC guidelines), and scored 50 stains by difficulty across 8 different surfaces.

The scoring is simple: each stain gets a difficulty from 1-4 on every surface (cotton, polyester, carpet, hardwood, marble, upholstery, leather, tile), then I averaged them. Hair dye at 3.5 is the undisputed worst. Turmeric and permanent marker tied at 2.8.

The biggest thing I learned doing this: the #1 mistake for almost every stain is using hot water. Your instinct is wrong. Cold water first, almost always.

I also built a full interactive version with step-by-step removal instructions for all 50 stains if anyone wants to bookmark it or play with it.

u/Mastbubbles — 4 hours ago
I got tired of being the person who panics every time someone rubs a wine stain,
so I finally ranked the 50 most common stains..
🔥 Hot ▲ 354 r/coolguides+1 crossposts

I got tired of being the person who panics every time someone rubs a wine stain, so I finally ranked the 50 most common stains..

Every time someone spills wine at a restaurant or gets coffee on their shirt at a cafe, I'm the one who panics and be like "PLEASE DON'T RUB" and Hair dye is the one that breaks me the most.

So I finally sat down, went through cleaning sources (Good Housekeeping, Martha Stewart, university extension guides, IICRC guidelines), and scored 50 stains by difficulty across 8 different surfaces.

The scoring is simple: each stain gets a difficulty from 1-4 on every surface (cotton, polyester, carpet, hardwood, marble, upholstery, leather, tile), then I averaged them. Hair dye at 3.5 is the undisputed worst. Turmeric and permanent marker tied at 2.8.

The biggest thing I learned doing this: the #1 mistake for almost every stain is using hot water. Your instinct is wrong. Cold water first, almost always.

I also built a full interactive version with step-by-step removal instructions for all 50 stains if anyone wants to bookmark it or play with it.

u/Mastbubbles — 4 hours ago
I mapped every color of every iPhone ever made (2007–2026)
🔥 Hot ▲ 464 r/technology+1 crossposts

I mapped every color of every iPhone ever made (2007–2026)

Was bored and went down a rabbit hole trying to figure out when iPhones stopped being boring black/white slabs and started coming in actual colors. Ended up mapping every single color option across all 52 models

Some things that surprised me:

- 2007–2012 was literally just silver, black, white. That's it. For 5 years.
- 2013 the 5C dropped and suddenly there were 8 colors in one year
- Then it went back to boring for a few years
- 2018 onwards is where it explodes, the XR had 6 colors alone
- 2025 has the most ever with 14 unique colors across all models
- Cosmic Orange on the 17 Pro is the wildest color Apple's ever done imo

Also built a full interactive version with every spec, price, camera, and a compare tool if anyone wants to dig deeper.

full interactive version

u/Mastbubbles — 8 hours ago
These moments, made me cry and smile at the same time, so I mapped every moment that made me cry

These moments, made me cry and smile at the same time, so I mapped every moment that made me cry

They don't make you cry because they're sad. They make you cry because, for a moment, they make you remember what you love.

Every tear is a reminder, of someone you miss, something you lost, a version of yourself you left behind. That's not a formula. That's the truth.

sheets.works
u/Mastbubbles — 11 hours ago
A Cool Guide about all the 2,700+ airlines that have existed since 1919. This map shows where they were based, and how many are already dead. [OC]

A Cool Guide about all the 2,700+ airlines that have existed since 1919. This map shows where they were based, and how many are already dead. [OC]

Each dot is one airline, placed at its home country. Color = continent (blue = Europe, red = North America, yellow = Asia, green = Africa, purple = South America, orange = Middle East, cyan = Oceania). Gray dots are airlines that shut down.

Some stats from the dataset:

- The median airline lasts just 11 years
- 2008 was the worst year, 88 airlines went under (one every 4 days)
- The US alone has lost over 200 airlines
- Italy has an 84% airline death rate
- KLM (1919) and Avianca (1919) are the oldest still flying

Have always been fascinated with airlines, made a whole interactive version, if anyone wants to give it a try.

u/Mastbubbles — 1 day ago
2,700+ airlines have existed since 1919. This map shows where they were based, and how many are already dead. [OC]
🔥 Hot ▲ 63 r/Infographics+1 crossposts

2,700+ airlines have existed since 1919. This map shows where they were based, and how many are already dead. [OC]

Each dot is one airline, placed at its home country. Color = continent (blue = Europe, red = North America, yellow = Asia, green = Africa, purple = South America, orange = Middle East, cyan = Oceania). Gray dots are airlines that shut down.

Some stats from the dataset:

- The median airline lasts just 11 years
- 2008 was the worst year, 88 airlines went under (one every 4 days)
- The US alone has lost over 200 airlines
- Italy has an 84% airline death rate
- KLM (1919) and Avianca (1919) are the oldest still flying

Have always been fascinated with airlines, made a whole interactive version, if anyone wants to give it a try.

u/Mastbubbles — 1 day ago
2,700+ airlines have existed since 1919. This map shows where they were based, and how many are already dead. [OC]
🔥 Hot ▲ 139 r/Infographics+1 crossposts

2,700+ airlines have existed since 1919. This map shows where they were based, and how many are already dead. [OC]

Each dot is one airline, placed at its home country. Color = continent (blue = Europe, red = North America, yellow = Asia, green = Africa, purple = South America, orange = Middle East, cyan = Oceania). Gray dots are airlines that shut down.

Some stats from the dataset:

- The median airline lasts just 11 years
- 2008 was the worst year, 88 airlines went under (one every 4 days)
- The US alone has lost over 200 airlines
- Italy has an 84% airline death rate
- KLM (1919) and Avianca (1919) are the oldest still flying

Have always been fascinated with airlines, made a whole interactive version, if anyone wants to give it a try.

u/Mastbubbles — 1 day ago
LEGO has made 228 solid colors since 1949. source - [Rebrickable]

LEGO has made 228 solid colors since 1949. source - [Rebrickable]

I pulled color data from Rebrickable and tried to visualize the full history of LEGO’s color palette.

Since 1949, LEGO has produced 228 solid colors (excluding transparent ones). Today only 56 are still active, while the rest have been discontinued over the years.

The visualization shows when each color first appeared, how long it lasted, and when it disappeared.

A few things that surprised me while building it:

• The palette stayed really small for decades
• The late 90s introduced a huge wave of new colors
• Around 2004 LEGO replaced several classic colors like Light Gray and Brown
• Some colours lasted 50+ years while others only appeared briefly

Curious what people here think, especially if you’ve been collecting long enough to remember some of the older colours.

Interactive version to play with - here

u/Mastbubbles — 12 days ago
A cool guide for The Strait of Hormuz crisis, visualized: 21M barrels/day through a 21-mile gap
🔥 Hot ▲ 118 r/coolguides

A cool guide for The Strait of Hormuz crisis, visualized: 21M barrels/day through a 21-mile gap

After listening to the news all day, and realising how important this 21 mile passage was, I thought let's make an interactive map for the same.

u/Mastbubbles — 16 days ago