I wanted a basket to put my home grown veggies in while I harvest them, so I found the biggest basket I could 3D print. The design I decided to print was the “Mega Collapsible Basket” by 3DPRINTINGWORLD, from Thingiverse which can be found here: https://www.thingiverse.com/thing:2949519
This is a really clever design that prints completely flat and in place. Once printed, and after a little breaking in, the flat piece expands out to a pretty good sized basket as seen in the photos below. Much easier to store than most baskets, and it works exactly as expected.