What if a bunch of campers from Athena, Hephaestus, Hecate, Hermes and Iris cabins came up with a demigod friendly cell phone. Techy Athena kids design the phone, Hephaestus kids build it, Hecate cabin imbued it with spells to cloak it from monsters, Hermes campers channel their dad's protection of travellers into the phones. The Iris kids then power the phones based on how their mum sends messages.