Printed Circuit Boards!
Circuit board manufacturing!
While I understand this is probably unlikely to happen any time soon, it would be nice...
I wouild also love to be able to send in drawings of Circuit Board layout and have them made for me. Nothing like multi-layered boards, just the normal single sided type...
I would love to do the soldering on pcbs for people who want to buy kits but are not comfortable soldering the parts themselves.
marc @ ponoko commented
hey - i'd love to see that too --->
... have a look at www.fritzing.org