Probably not a boxable/repeatable Christmas gift, but my own ESP32 project involves decoding CAN-bus signals from my car, with the hope of using existing button

Probably not a boxable/repeatable Christmas gift, but my own ESP32 project involves decoding CAN-bus signals from my car, with the hope of using existing buttons and steering-wheel controls to trigger actions. (Unfortunately the messages I'm interested in any appear to be exposed on the OBD-II port, so some wire-surgery is required.) When it comes to projects you can just box and give away, I my imagination runs towards singular home automation tasks, where some kind of sensor or timer controls power to an appliance, or which collect statistics or sends notifications. I'd like to have something that automatically opened my window blinds in the morning (I have to close them at night due to light pollution) but that's more of a motor problem than a logic one.