Penny Packer 16 is a fun and relatively challenging packing puzzle.
I comes with 15 US pennies within the frame and one in a recessed space. The objective is to fit the final coin into the frame and there is only one unique solution.
To solve this you’ll need to use up 74.7% of the available space but that is probably not going to help you one bit.
Made in the US by Creative Crafthouse. The solution is included.