This splatter cake would be fantastic for a Bat Mitzvah if it were splattered with true neon colors. The rest of the decor could be done in neons with a black light that comes on during the dancing/party part of the event. 13 years-olds would love the glow in the dark effect.
Cute autumn tree made from painted puzzle pieces and crumpled paper bag. Another option: paint puzzle pieces diff kinds of green, glue red pom poms for apples, onto lid of a shoe box. Create apple tree art. <- Great for puzzles missing pieces..