"When In Doubt, Improvise"
At Doggie Palooza in Minneapolis last summer, one of the vendors had this wash tub full of rubber duckies. Dogs were supposed to pick up a duck, then you'd win the prize indicated on the bottom.
My dog Chaz approached the tub, then proceeded to climb in. To him, it was either the smallest kiddie pool he's ever seen--or the largest water bowl. He never did pick up a duckie.