Years ago in a town far far away I ran a Cthulhu adventure on Saturnalia day. But I needed some specific characters like Santa etc..
So I made them out of paper.
You may have seen people selling images of a character on a rectangle of paper that sits in a plastic holder to make it stand up.
So you could photoshop a character on your computer, print it, cut it out with some extra tab material at the bottom.
Then tape the tab onto something, a square of cardboard, a quarter, whatever.
I had cut up masonite squares and taped them to that.
I drew them by hand using a Pilot pen and colored them in with colored pencils.