The 4 little items are magnet mounts for a kitchen timer. The longer item is a right-angle double ruler, holes & squares. I made this because I needed something to hold the magnets on a kitchen timer to it sticks to the fridge, but there are little screw holes on the back, and I don't want to get superglue into them. So I'm going to make some magnet holders that will sit on the four corners of the timer, on its back. I also made a ruler that measures hole size and square size. So this model contains all three things in this design: the magnet holders and the 2-types of ruler.