Rooster Trivets

I bought these trivets for $0.30 at a garage sale this weekend because... well, why wouldn't I buy 3 trivets with roosters on top for only $0.30? I thought I could surely come up with something fun to do with them.

They are cast iron - a sharpie is next to them for size.

I am thinking of putting some different fabrics in the open areas and/or perhaps spray painting them a fun color and hanging them on a wall. Do any of you have other idea? I'm all ears!