what a fun prank to get some different types of oils and 20 boxes of condoms, underwears, 2 toilet plungers and pack of bungee straps, and a bunch of rope. Run 30 items though at max volume...
then say out loud, "crap, I forgot my wallet", and exit stage left.
ok, that's just me pulling the usual harmless public stunt. Oh, and make sure someone records it for Youtube.