Stun gun, tazer, mace
I just checked and noticed there’s a no “chemical dispensing device” and no “club or night stick” ruling along with the no gun. So pepper spray/mace is out. What about a can of bug spray or something equally offensive or would bug spray be a big no-no? Would a kubitan be considered a club or night stick? They do dorm room searches so sneaking anything in would likely be found out or someone would let the word out.