You're going to need more tape than you think. When you rebuild a new box, you'll reform it by taping the seams, and reinforce it by taping the edges and sides. With a used box, reinforcement is even more important, so don't skimp. You'll even want to tape the corners of very heavily packed boxes.

• Reinforced tape has nylon filaments running through it. This stuff is really tough - excellent for closing and reinforcing particularly heavy boxes. Make sure it's at least 2" wide.

• Plastic tape is not nearly as tough as the reinforced kind, but works well for all but the heaviest boxes. The clear kind is generally a bit heavier than the brown kind, which makes for easier handling. In any case, make sure it's at least 2" wide; 3" wide is better.

• Paper tape is now less common: it needs to be wet with a sponge for the adhesive to stick. It's good for closing boxes, less so for reinforcing edges. Again, 2" to 3" wide is best.