DIY pinball machine (for a DIY arcade? Light on the instructions, but nifty all the same. Could use discarded books and/or have the teens pick a book to use as a theme if including literature in the programming is important.
This person made a pencil or pen holder from old cassette tapes! Looks like he just glued them together maybe used a piece of cardboard for the bottom. We have so many old cassettes and not enough pen holders at the studio = ))
A safety poster promoting PPE awareness, with a satire message : This Looks (pointing to a man wearing proper PPE) Better On You Than This (pointing to an injured pirate). Reduce The Chance of Injury by Wearing PPE Properly.