There are many ways for a film to be creative: plot, characters, presentation, and more. One variation we don't often see is in the medium itself. So far this year, the post popular media for the Summer Shorts films are CGI and live action. We don't often see puppets or classic animation, for example.
Paintballing is a short that could be classic animation but looks more like it was drawn in Microsoft Paint. That crude program is rarely a source of works of art, but this short is both novel and fun:
Choosing an art form that is thematically related to the plot was an inspired choice that is rarely possible with more traditional media. On the other hand, I've been playing too much Worms lately, so maybe I'm biased toward depictions of cute little things blowing each other up.