I am going to start with the bathroom toilet fushing sensors. You go into the bathroom put your purse down and grab one of those little toilet seat covers. You bend over to place the paper on the seat and when you straighten up to turn around, the toilet automatically flushes taking your cover with it and leaving a fresh spray of toilet water dots everywhere.
The sensors are faulty and flushing the toilet unnecessarilly is probably waisting a ton of water not to mention people's time.
I have an idea for a solution for this but I dont want to say just yet