Starlino has a neat technique for making a cheap breakout board for lead-less QFN chips. In brief:
- Drill a hole in a proto board so that the chip barely fits inside and has its connections on the same plane as the board. Fill gaps with epoxy or putty.
- Tape over everything except one pad and and small path to the proto board.
- Use a conductive ink pen to lay a path. Remove tape before the ink dries to keep from breaking the pathway when it hardens. Wait for it to dry and repeat on the other pads.