*GENIUS*Leftovers, also from Klemens Schilling, is an easily made stool or table made from bags of leftover concrete mix. Take a bucket, mix the concrete, and insert three legs in until the mix hardens.
Sharpie + Dollar Store mugs + Bake at 350 for 30 mins = easiest personalization ever. You can even use super cheap mugs from the dollar store to create gifts or party favors. Just draw on the surface of your mug and bake it for 30 minutes at 350 degrees.