As far as needlessly complex and useless gadgets go, there's nothing better than a mechanical backpack that moves a wiener in different directions in order to get a bulldog to do your bidding.
YouTuber William Osman designed this stupid smart device in order to "biohack" his family's English bulldog Barkley. The basic concept is to use the old carrot-and-stick trick to guide buddy along the desired path.
The video is a little light on full technical details, though Osman does a quick rundown of all the mechanics once fully assembled. For those who actually want to try this or improve on it, he's uploaded detailed directions, complete with Arduino code and COSMOS files.
What happens when you've finished laser cutting, tuning PID loops, and mounting the device on the dog's back? Well, he's a bit confused, does a little chasing, stares at it in the air, and eventually just sits there. In other words, he's a good boy.