I searched the Creek and the rest of the web looking for ways to hold small parts when routing and didn't find anything that anyone thought would work. So here is what I came up with:
2010.10.10 Clamping fixture 3-2.jpg
2010.10.10 Clamping fixture 2.jpg
2010.10.10 Clamping fixture.jpg
I made this from a piece of BB and some clamps I got from MSC. They are available from lots of sources and are not very expensive. I paid about $7 each for these. They have 200# holding force. I drilled the holes so I could move them around for different sized and shaped pieces and added the sandpaper for a little more grip. The clamps are available in different clearances so different clamps can be used but I made a spacer block to raise mine up for thicker parts. I used it on some small parts (the pattern is under the clamp in one photo) and it worked well.