these were easy to print and works great. the kids are going to love this and atleast keep them busy for 30-60min. I am able to stuff a few bills in there. I added a small pin thing in the center tub to make it easier for them to get out what ever is in there. and just added a pattern on the out side to make a a bit more interesting. I wonder if there is a way yo make the pins that go through the puzzle a bit more beefier.i make it out of PLA+ and the are pretty sturdy. looking to make them out of pets or something to just slot them in there. I didn't have all the colour's in petg 😆