I love to modify and enhance packaging to reuse it.  I haven't shared many of my construction mods here, but trust me, I'm a whiz with thin cardboard, invisible tape, and binder clips.  But the absolute best is when you can reuse packaging without any mods at all.

These bulk salad containers are one of those things.  They are boxy, spacious, see-through, and stackable.  Perfect for stash storage!

I keep things that I access a lot, like crafting tools, in more sturdy boxes (the ones on the left with the clamp-on lids), but for yarn I'm hoarding, these salad boxes (on the right) are great.

They are also good for holding the supplies I'm using for a project.   I recently worked on a super-colorful project that involved lots of skiens of yarn.  I tucked them all in one box.  It made it easy to move around the apartment with me AND kept all the yarn tangle-free.

I'm also thinking of using the boxes for my WIPs instead of the gallon ziplocs I used to use.  The ziplocs just become a dog pile of "why aren't you working on me."  Maybe the salad boxes will seem more like a smorgasbord of orderly crafting choices.