Hello,
I was inspired by @evansd2’s post about butt joint techniques. (Planar butt jointing techniques).
I made a butt joint variation with hearts, which eventually turned into this box. I know the final product is not technically using butt joints, but he inspired me nonetheless. Thanks @evansd2!
I just added the design to my Etsy Store as well. The listing is here, if you want to buy the design: