Keys - what to do with them?

I have collected a large amount of old keys from when we re-keyed our entire department several years ago. Since I was in charge of the keys at the time, I threw all the old keys in a box and have held on to them, meaning to create something wonderful out of them someday. Someday is here!

Anchorage is hosting a re-vAmp, Re-do, re-sTore (ART) event for America Recycles Day on November 15, 2011. The challenge is to create art using 90% recycled or reclaimed product. I am planning on entering the competition and have a couple of ideas.

My first idea was a PorKEYpine or bird sculpture, but the more I work with these keys I realize I don't have enough, nor do I know enough about working with metal. So then I moved on to interesting designs, which works well with keys, but somehow they all seemed rather boring; circles, flowers, and snowflakes. Not really "wow" art in my opinion. This is from my latest playtime. I kind of like this rooster made of keys. I'm thinking if I clean them all really well and put a shine on them, it might look nice on a solid black background.

Have you got any other ideas? The art must be offered for sale, must use 90% reclaimed material, must be portable, and will be entered into a juried art show and displayed around Anchorage.