I asked our local driving range, Tee It Up Golf, if I could fly my much-loved, often-crashed Anycopter quad in front of the range. "Sure!" they said, and promised to give me a ride in the armored cart to go get it if it got shot down. Skip to 1:15 if you just want to see the impact.
Result: the golf ball struck the motor mount squarely, knocking the motor clean of, and the 10-foot crash cracked a wooden boom. This is all par for the course on a Saturday -- I got it up and running again with about a dollars' worth of parts. I love my Flite Test build!
Tee it Up Golf in WC: http://www.teeitupgolfpa.com/
Build your own cheap and cheerful quadcopter: http://flitetest.com/articles/anycopter-hub-build