Talking of digeridoos, a firned of mine used one as a persussion instrument of a different time.

He got into a fight with someone at a party. The person pulled a knife, whereupon Rab grabbed the nearest thing... a didge... and percussed the knifeman's head with it... In Rab's words, "I didgeri-done him".

Mentioning trays, Spider Stacey of the Pogues used to batter his head with a beer tray.