DIY Cardboard peripherals that work in conjunction with the joycon and switch. Looks really interesting. Also, Project Giant Robot making a comeback, neat. The joycon RC buggy looks real great.
... But looking at the prices, I think it's a bit too much. 70 USD for the base kit and another 80 for the robot one? Geez. I don't think the games will be sold separately from the kits, either.
Link to site