Here's a chance to use that old headboard and some of your favorite left over fabrics! for the base you can use reclaimed wood/scrap or even turn a long sturdy shelf on it's side! http://www.latina.com/blogs/home-style/green-tip-recycle-redesign-furniture
Daybed - It is a twin headboard and footboard turned bench, and once it gets a coat of paint and a cushion, it will be a knockout!
From Bed to Bench!
Upcycled headboard bench-I have an old headboard...
Great tutorial for an easy peasy headboard bench
tailgate pallet bench...very cool
The Backyard Boutique by Five to Nine Furnishings: Before & After: Dr. Seuss Bench