Just an idea here, but for the Marketplace a great product to have would be mining hardware. Obviously cards are going to be hard to come by, but stuff like USB PCIe risers, dual motherboard cables, fans, etc. could have some use...
this is genious!
The marketplace could start with small things like risers or case fans.
Next step could be block errupters or graphic cards if the number of clients increase.
I would really love to see mining hardware there!