I was going through these various websites which have crazy papercraft galleries. You can print out the templates and assemble them to make your own character model.
This works crazy on low-poly video game models, because, well, your physical models are going to be low-poly.
I tried my hand at MegaManX, one of my favourite videogame characters of all time.
It certainly takes a long time to figure out initially, but when you get in motion, you can't stop until you finish!