DIY: wine cork candles - Finish your wine and collect corks. Then soak them in a capped mason jar filled with acetone alcohol for a week. Light them up and enjoy making the easiest candle there ever could be.
Washi tape decorated plastic glasses for a party. Did this, and not sure how they got their tape straight on a sloped glass, so I just put little swaths of washi tape for names to be written onto punch cups.