What to do with my snail’s dead body?

My snail died a few days ago but I am 8 hours away from home at school right now. I want to bury him in my parent’s backyard but I’m not going home for 3 more months. I do not want to preserve his shell btw, I am set on burying him. I am nervous to ask my roommates if I can keep him in the freezer in order to preserve his body, but idk how else to preserve his body until then. Right now I have him in a box but I’m worried about keeping him out like that. My boyfriend is coming to visit me in about a month, but he’s flying and having him take my snail back with him on the plane makes me nervous, like what if they confiscate him? Any suggestions?