This could be really fun. Some quick ideas:

Like React.js But For Cooks - Metered digital MSG dispenser (perhaps in a spray?)

Monetizing The Eschaton - Credit card-reading donation plate / tip jar

Hyperlocal Paranoia - Device with LED/beeper + wifi, indicates whenever a new/unseen MAC address is nearby

Flesh Skeuomorphism - Computer mouse with skin-like texture

Scatological APIs - Device and service which monitor stool movements. Summaries, graphs, alerts.

Targeting The "Hikikomori" Space - Take any/all existing services (Uber, WashIO, food delivery, etc) and guarantee no conversation required.