I bought a set of these to give as small gifts at Christmas. My sister put one on her school messenger bag; I have another in a tray with pictures and small objects. They're beautiful!

They do look great, but the little cheapskate AlmostAD on my left shoulder says to just grab a bunch of old keys and dunk them into gloppy white paint.

I think these would look nice hung with ribbon from my glass door knobs with brass keyholes below. I like AlmostAD's idea, much cheaper! I found some beautiful keys on ETSY.

The Curiosity Shop in The Mission carries these too.