Hermione and OTA (come get her!)
Hermione bought one of those squirt guns at a very fair price. Actually, she bought two. The best, most amazing and most expensive models the twins had for sale. She went to the side of the beach to shrug off her sundress, showing off the bathing suit underneath, and dropped her beach bag to claim some territory, then she headed down to the water to fill up said squirt guns. She had a couple of redheaded (along with everyone else!) to soak.