(Hogwarts house mascots go: Lion, Serpent, Badger, Eagle)

Magical mascot suggesgions: Dragon, Unicorn, Phoenix, Multi-Tailed Fox ;)
American animal mascots: Wolf, Elk/Moose, Bobcat/Mountain Lion, Fox

The only problem with havng every year up for grabs is that it will be very hard to have eleven year olds hang out with seventeen year olds.