This was my fault, I understand that. The game is awesome. I'm not blaming the game.
I'm at the very beginning of my new journey in a fresh world (1.22). I'm just about to move to the copper-age, at least I thought I was.
It took some time to find all the copper bits for my first copper pickaxe and hammer. Not to mention a bear which lives nearby. The bear is making my life a bit complicated.
I made the copper tools and stored both of them in a tool rack. I was planning to go out and mine more copper tomorrow. So, I had a night to spend.
I had some clay around, I made two storage vessels and a couple of molds which I need later on. I had my pit kilns in my dirt house. Right, because of the bear. I needed one more pit kiln, so I dug up one, just below the tool rack. I thought… I don't know... I thought the tool rack was safe.
I was wrong. I was minding my business outside. And when I came back inside, the tool rack was gone. My precious copper tools were gone as well.
So, I'm looking for more copper bits, again. Lesson learned.