Cape PCB's for DIY builders.

HI Folks

I was quite overwhelmed with the response from people who bought the BCC cape PCB's.. They have almost sold out in a few days. made me think that perhaps there are other capes out there that people might like pcbs for so they can build their own. Anybody got any good ideas. I'd be happy to do another run like i did for the BCC capes as a way of inputting the community..