One is to keep all bottle openers and stoppers together.
The other two are to collect the salt and pepper that always falls out the bottom of the grinders and previously messed up the kitchen surfaces and dining table.
They are all made from two off-cuts of timber. Holes cut through the top piece with a tank cutter or drill, glued and screwed together. Sanded smooth on a belt sander and finished with bees wax and polished.