Origami folding paper storage box

I kept finding piles of folding paper scattered around the house so I made a very simple box to store them all. It fits up to 150mm sheets and has several separators for different types of paper. The lid is friction fit and stays rather well in placeI embossed an Origami like logo on the front, back and top to make it a little less boring. Very easy print, but I underestimated the tendency for the model to warp. Should have put down a little bit of glue or used a brim as you can see in the one I printed. The 15°C room didn't really help in preventing warping. The pictures are of my first print and here are the modifications I already made in the model but have not printed yet: Gave the lid a small fillet for a less sharp feel (you'll need good cooling for those first few layers)Made the box some 8mm higher because a 150mm paper did not fit entirely (and the edges of the paper would get damages by pushing the lid onto the box, and onto the paper)No supports necessary (the slicer will wa