I wish I had thought of one of these ideas. I just might be rich by now.
Traffic lights with countdown indicators.
Wall outlets with USB chargers.
It should also come with a built-in night light.
And the ultimate outlet would also have extension cords built into the wall.
Small tiles you can attach to your keys, wallet, computer, or pretty much anything.
If you lose anything, you can then look up their location on your smartphone.
Fresh pizza vending machines.