

I do shipping fulfillment for my brother’s business and at least 60% of the boxes I use are just reused from stuff getting mailed to us. I reuse all kind of stuff for packing material, especially xmas/birthday wrapping paper.
Colorful paper packaging can be good for collage art.
I don’t have any pics, but I’ll link you this list of artists using recycled materials, and you’ll have a good time if you Google that phrase.