https://www.polygon.com/2018/1/17/16902888/nintendo-switch-labo-price-release-date-video-trailer-details-cardboard-toy-con-accessories

Nintendo has revealed a unique new accessory line for Switch: Nintendo Labo, a cardboard-based line of kits that allow console owners to create and play with a variety of handmade accessories.

Nintendo Labo is a line of do-it-yourself kits for Switch. It uses cardboard pieces (25 branded sheets are included in each set) to create different, custom-made accessories for the console, from RC cars to robots.