Have you tried finishing with ONLY snowballs? You should give it a try!
Also, as far as the postcards go, let's just say you should personally check back tomorrow.
Oh wow, thank you! :D How did you do it, btw? Did you put links to the external server where you changed the content? I haven't even touched on how things like this work since I'm very new to game dev and programming, but I was thinking about how someone can change content without changing the file, which is locked after the jam ends?
And I've just tried all-snowballs :D Lol! I really love this kind of alternative ending :)