Currently a timer based light switch for my mother, turning on/off the actual lights (so not just some lamps you plug in). Interface is a website, so easy to use for her. This will help her feel safer regarding burglars, since she can make the lights turn on and off seemingly randomly when she is gone. And not just any light but the actual lights of those rooms.

The pile of thingd I have to repair is far larger. But that is mostly too complicated to explain what I actually do to fix the stuff. But generally speaking replacing the actual chips in electronics that failed, instead of replacing everything.