If your store caters to kids, make their shopping experience a delight, please their parents and have a chance to sell even more.
Offer a service to the parents where they order the kid’s present in advance. You gift wrap it for them and hide it somewhere in the store. You also write the kids name or otherwise mark their gift wrapped package with ink only visible in UV light. When they arrive, you give the child a magic wand (UV torch), and they go through the store searching for their hidden treasure.
To help remind you when you need to apply more sunscreen.
Have a “smart” patch you stick on your exposed skin that monitors the amount of sun you are exposed to and alerts you to put some more sunscreen when you have reached a certain exposure level.