A watch with built-in earplugs
The end of losing or forgetting your ear plugs.
We don't have pocket smart watches, but we do have pocket ear plugs. We don't have wrist ear plugs, but we do have wrist smartwatches. Here's why that's a bad idea.
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A train that ejects passengers at the right station
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A tower bus
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Toddler toothbrushing
Mouth openness as a play button
A heavy-duty photocopier that also cleans the floors
When making copies mobs the floors