DIY Fabric Hanging Cradle Sewing Pattern (Hmm, interesting) maybe make one for a friend. it's a hammock. for a BABY! It would be easy to put hooks in the ceiling so you can take it down from guest room when baby leaves :)
Hand painted tree rings - would recommend putting all tree rings on a board (which could be painted a coordinating color to add pop to the art piece. Really neat idea for after school kids. Might just do 9 rings in a square frame!