Pentominoes from the puzzle game Hexed.
I made these to be turned into fridge magnets. If you're going to do that, measure whatever magnets you're going to use and with either your slicer or modeling software, cut away the space for the magnets. I used 10.1mm diameter by 5.2mm tall magnets. Ideally, you only want a few layers (<1mm) distance between the magnets and the surface of the print. Scale it up or down according to what magnets you have on hand and how big you want them to be.
The author marked this model as their own original creation.