The only idea I have for them better than what Rebecca said about pairing them with light and dark is you could gift them to me <bwsg>. Now that would be a good use of them.
Seriously, pick a light color that goes good with a FQ and a dark color and make either Attic Window or Log Cabins out of them. Those are my two favorite patterns. Unless you wanna try a tumbling block.
ReRe
(bwsg = big wide silly grin)