A lot of shoeboxes can be unfolded to lie flat. This helps a lot in storing the ones you haven't re-purposed yet. When you re-fold it, do it so it is inside out. Then it makes a very good mailing box as you can just write the address on the box then tape it up securely to go through the mail. I also re-fold them inside out to use as storage for craft items like fabric paint etc.
Here's an extra "box" hint. I cut the boxes that bath soap comes in (like Dove or Caress) in half, then fill up the bottom of a shoebox with the half-boxes. Each box will hold two Scribbles bottles upside down. This helps preserve the paint in the bottles for years as any dried paint will be on the other end so it won't affect being able to squeeze it out of the tip. I've used some that are over 5 years old!
By DeBushe from San Jose, CA
My daughter found this video on youtube. It is about how to turn a shoebox lid into a locker organizer with duct tape, a glue gun, and some small wine cork.