I like the idea of forum badges. I'd also like to have Donation Coder Seals. Larger images we can use on web pages like other awards banners. I'd like to see them for things like programming contests. I want to post them on pages like my HowLong2It webpage.
I am thinking something like a Cody coin. The US Army has a tradition of handing out coins for stuff like this.
This is crappy, but gets my idea across.
p.s. Seal courtesy of Official Seal Generator.