For the pizza boxes ..... I cover them with contact plastic. Helps to make them sturdier, and of course, prettier! Then I insert a long shoe lace, so I can bring it around to the front and tie the box shut, instead of fiddling with trying to get the lid to insert.
Great way to take blocks to the LQS for show and tell, or to audition additional fabrics. As well as the home storage mentioned previously. And .... when taking WIP to show to quilter friends!