Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5215397.
Update: added a "tiny" version!
This is my attempt at a "compliant" base for paper minis. The idea is that you can bend it slightly for the part that holds the minis to open up. Insert the miniature, and it will hold it well enough for a game. Then, you can easily remove it.
Note: in some cases the ends of the opening would fuse in my prints. I have tried different geometries, but I could not avoid it completely. Carefully pry this spot open with a small screwdriver, and the base still works fine.
And if you want to know more about paper minis, they are an awesome way to expand your collection of minis for your roleplaying games. You can find a number of people creating them in the List of Artists (https://walkingpapercut.com/list-of-artists/) under Paper Miniatures.
Neither of these minis are my work, and the awesome Bee Rex is available here - https://www.drivethrurpg.com/product/300719/Retroverse-Dinosaur-Minis