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Oh my god
That Labo thing
Companies could conceivably make their own minigames and print peripheral designs on their packaging
You could buy anything from Amazon (other online retailers are available) and there are patterns marked on the box to make a special controller and then you can download a game to play with it
Peripheral designs on pizza boxes with downloadable games
Cereal boxes
They could use it on cereal boxes
Used to be they came with a little toy, now they could come with a free switch peripheral and a game