This is a translation and gallery post of part of a thread from 2ch that was summarized here (via Houkago Anime Time). There were a ton of comments, so I just translated the main ones.
People posted (somewhat poorly taken) pictures of bonus filmstrips that they got from seeing the K-ON! Movie 3 times or more. Naturally these strips are all raw cuts of movie film, so there are plenty of shots from the movie! In theory, if enough people gather their pieces together and arrange them accordingly, they’ll be able to recreate a silent film! :D
I’d recommend just waiting for the BDs though.