Once a month adidas create a special instore event for their customers. We were asked to produce their most recent event and help entice those customers with their ear to the ground into store.
We created a Deal or No Deal inspired setup, where customers could choose from one of three boxes. In each box was a pair of trainers, and if the customer was lucky enough to choose a pair that fit them - they got to keep the trainers!
A really simple mechanism, the game drew crowds all day as customers were offered the chance to take something extra home, with a lucky few leaving with one more bag than they had planned to.