Here is the best, cheapest jewelry making tip of all time, courtesy of my auntie, the artiest lady on Earth:
Plastic lids. Yes, it's that easy. Save the plastic lids from butter bowls, Pringles (yay!), cream cheese, anything at all. Wash them up and use them to sort or hold beads while you're working. When you're done, just fold them and you can pour all of your unused beads or whatever right back into the container.
How fab is that?
Plus, it gives you an excuse to eat Pringles and cream cheese for lunch today. . .