So there's apparently this movie made based off of the old Hampsterdance meme, called "How the Hampsters Saved Winter". It was made by the same people who made the original Hampsterdance. It is completely lost. The movie is only mentioned on 3 different websites: on a forum, some random news article, and the official Hampsterdance website. There are also no screenshots of the movie. Here is the picture of the DVD case from the Hampsterdance website.
Looking at the Hampsterdance website, it looks like the DVD was actually available for purchase for a while, however if you try to purchase it now, it takes you to a page that says "this product is no longer available".
Hampton The Hampster has a twitter account perhaps ask him for the film twitter.com/TheOGHampton
I don't think that's an official account, iirc the real one was abandoned years ago. I made a video about this earlier in the year and did find a few leads through the company that put the DVD together.
I've been meaning to contact them but completely forgot until seeing this thread again so let me get on that and I'll update with what they say here.