I wish I had kept my old crib mattress! What a great idea crib spring memo board. Turn an old crib spring into a cute memo board with some spray paint. This article has tons of ways to reuse old Cribs.
Beautiful center pieces or just around the house- rocks, flower of your choice (maybe string it to a rock by the stem so it doesn't float) in a vase, fill with water, add small candle and voila-on the mantle?