In his pre-Monty Python days, Terry Gilliam did caricatures for a show called "We Have Ways of Making You Laugh." He suggested doing an animated short film for them and he told Vice magazine "They gave me two weeks and £400 [$600} to make it. The only way to do that was to simply cut out the drawings and move them around. No one had ever seen anything like that on television before, and overnight I became an animator. [laughs] That started a second season of Do Not Adjust Your Set. There were six of us then, and that became Python."
It's interesting how often limitations lead to something innovative--if we approach them creatively.