I have 8. I like to put my projects in them. I can see right away what's in in. they can also be used for a light box. Just drop an led light in it and start tracing. I can put the fabric I'm going to use along with the pattern and anything else (matching thread) notes. I label the front so I know what's in it at a glance. Don't have to worry about bugs getting into your projects. Just for the heck of it, I put 2 king size sheets in one and it works. Lets me know I can put a king size top in it. I buy the clear/clear not tinted clear but up to individual. easy to carry. That is a great price since they're usually $10.00 at regular price. You can store flat or right side up.