Yeah, those are pretty sweet. That first one is great. I do collect stuff from Alien 3 and Res even though I don't like the films themselves but of course I'm more apt to spend money on something inspired by the first two films.
In general, I don't mind fan-made stuff although I don't own much. Someone usually makes something if they're a fan to begin with and that's okay in my book. Fan interest and support keeps the franchises going during lean years when there's no new movies, games, or comics.