Ha-ha. As a proud member of VMRCVM, I agree: SCAVMA is the mob in our school. I really hate that I HAVE to be a member since my insurance is through my husband anyway.
Clubs I would definitely join (as a SA-tracking, emergency-interested vet student): SCVECCS (emergency club, this year, I will be the president, last year I was just a member), companion animal club, animal welfare club.
I WISH I joined FAPC (food animal practitioners' club). I didn't as a small animal snob and missed out on a TON of opportunities. I would highly recommend joining this club even if you don't plan on practicing LA medicine. They have awesome wet labs, cow palpations, alpaca labs...
VBMA is a business club. Tons of useful information with focus on business aspect of vet med. Some better networking opportunities than SCAVMA offers (IMHO). I am a member. I don't think I would run for office though.
Alpha Psi is a drinking/party club: I didn't join last year, and I am not going to join this year. To me, it's a waste of time and money, but if you like to hang out with fellow vet students at parties/bars, you might want to join. I think, most people in my class are members.
OTS is a community service club. They do really great things like relay for life, and I might join this year. Although I always seem to be lacking time when it actually comes to servicing my community.
🙂
Oh, and pathology club! Which is just an awesome club and has no fees at VMRCVM.
In general, if you don't run for offices, you can join all of them. Heck, you're not required to attend ALL meetings (even if they make you feel like you are

). I am a bit more selective this year, but last year I joined almost all clubs (except FAPC (unfortunately) and Alpha Psi (fortunately)).