Power bricks are very useful. Many come with multiple USB and USB-c ports. If you're at a public space or work with an outlet you can charge it there, and later, charge your devices on the brick when at home.
I know most don't have solar panels but you can charge the brick during the day and devices off the brick at night to save electricity as well. Also if your utility charges more or less depending on the time of day you can charge accordingly.
Many of us have multiple devices like laptops, fitness trackers, phones, tablets, laptops. It all adds up, especially with energy prices increasing today.