USNR has been jumping between .20/share and .50/share for the past few weeks. I bought at .30/share, and sold at .50/share about 3 weeks ago, just picked up another 30,000 shares at .20/share, and it should hit .40/share sometime early next week.
SNRN is another good one for flipping, you can pick it up around .18-.20/share right now, and sell it around .22-.24/share same day. Not too shabby for a 20% profit.
CXIA is another one to watch. Pick it up around .13/share today, and it should hit $.17/share by Monday.