Sometimes your own lazyness comes back at you and bites you in the rear.
I inventoried my solder. Should have been a quick affair - until I realized that there must be another, different roll of SnPbAg. I suspected it to hide in a certain drawer.
In order to access that drawer, the drawer above needed to be closed.
In order to close that drawer, the content needed to be rearranged.
During this process, several new questions connected with the tools inventory popped up.
Around 2 hours later: roll of solder found.
About 3 hours later: auxiliary piles sorted and stowed.
Now to tired to solder.