Wouldn't it be great if...

Wisteria

Hey everyone! I have a project in engineering right now that involves inventing a simple machine/mechanism within material limitations (really basic stuff, magnets, boxes, yarn, paper, etc) and I can't for the life of me think of anything that would work. are there any inventions that you think would make your life a little easier that I can make for my project? Any help is appreciated, thanks!