clear tape all the windows and headlights,rear lights..form the inside and/or outside to reduce flying fragments of glass and plastic.
use a saturn....dent-resistant plastic side panels
sledgehammer 2 hits - $1
baseball bat 2 hits - $1.50
punch with fist 2 hits - $0.25 (dangerous)
throw a pie at (whoever) 1 pie - $ 10.00 (just a pie crust with lots of whip cream...)