When I was a freshmen I bought myself Speed Stacks. Speed Stacks are 20 plastic cups with three holes in the bottom of the cup and you would stack them into a pyramid how many times you could with only 20 cups. I started to play with them everyday and I would time myself in the mat it came with, at the time I had so much fun. After playing it everyday I started to get really bored with it, so I stopped playing it for awhile and I was going to start playing with them again but I just forgot about them and haven't played since then.