If you know where Packer fans hang out in Denver, please let me know. The green team will be here for Monday Night Football and I would like to locate a friendly crowd to celebrate with.

Good question. I think good pranks can be done to total strangers in a grocery store. When someone leaves their cart and goes to another aisle, put about 3 sacks of flour in their cart. When they return, they think that can't be their cart and will wander around forever.

Or put a bunch of Prep H in people's basket and hope that you are there when they start checking out. This works best for friends, not strangers.

Another. Grab a few toys off the peg racks and give them to children that are sitting in the carts of parents that have left them momentarily.