A beaver in a tuxedo/tail dress? (For the official pages-stuff)

A beaver behind a desk? (That too)

A beaver doing an exam? (For some study-wiki or for the Notes-page maybe)

Two beavers drinking beer heavily on a party? (For the party-wikis)

Two beavers in togas discussing if the pond is half ful or half empty? (useful for some forum-page)

A beaver taking pictures of its university? (For international links)

A crowd of beavers pushing each other around on Mainstreet? (For Mainstreet)

Well, that should keep you occupied for a while! ;-)