Originally Posted by rm -rf

Park Tool patch kits work great, too.
I save punctured tubes until I have 3 or 4 of them, and use up a patch kit's tube of glue all at once. The tube glue dries up once it's opened, and won't keep for very long.

accessories
I use some real hardware store sandpaper instead of the cheap, tiny sandpaper patch in the kits, it's faster and more effective. Anywhere from 100 to 220 grit.
A silver sharpie is helpful to mark a big crossed line through the hole, so I can center the patch over the hole easily.
A screwdriver handle or even the patch kit box is good for pressing down on the patch -- I really go over the whole patch with strong pressure.