Sharpen by cutting superfine sandpaper.
By donnaschmitt215 from Glendale, NY
This page contains the following solutions.
Rub your fingers on a sheet of sandpaper laid flat on the bench. This will get off all types of adhesives that you want to get off your hands before washing them.
Can't ever find that emery board when you need one? Cut up different kinds of sandpaper and put small pieces in an envelope.
Sometimes I forget to bring along a nail file or emery board. I have found that if I get a little bit of sandpaper and wrap it around something like a toothpick, it will provide enough of an edge for me to file down the ragged edge of one of my nails.
Sometimes new shoes will have very slippery soles. You can try roughing them up with sandpaper. This is a page about using sandpaper to make shoes less slippery.