There's too many to name...
With Gator Bhangra (at Bash last year), I had to practice playing dhol with the team and they had to get used to me (because i'm not from UF). Right after the mixer, we practiced in the very hall we had it in. After we got kicked out...then we were looking for a parking garage to practice in, and not many were open at the time. Plus, it was raining outside...and then we met a stranger that sounded strangely like Russell Peters, and made jokes like the man. He ended up finding us a garage and he watched us as we practiced. Bear in mind, I was playing my dhol pretty loud and people outside the garage were looking up trying to find out what's going on.
With GMU, we've practiced anywhere we can on campus. We sometimes had to practice on the roof of a parking garage on campus, and I pumped out the music from my car...it was about 11pm or midnight usually. Or for QC, we practiced at the garage for the Hampton Inn, the funniest part...we were in an area that said "construction site", that clearly didn't stop us. And for a competition in Norfolk, we practiced at our hotel and anywhere else. Pretty exciting times...
I'm sure more will come soon! Another season, another season of varying practice sites.