1. A battery-powered water-gun that cleans your toilet by shooting a strong water-beam at a shit-stain. Of course, that shitty water won't get reflected back at yourself. Of course not.
2. a battery-powered umbrella (If you lose it in a train, it's still gone.)
3. a cable with LEDs glued on that shine when a current is running through (no it's definitely not an accurate representation of the current itself) And you don't adjust your life to your electronics. Your electronics must adjust to your life.
4. a bulky combination of a smartwatch with a teeny-tiny screen and an ordinary watch (How thick? How heavy? What price? And I doubt that the battery will last the advertised 5-7 days.)
5. The key-finder is somewhat okay, but why would you program your keyring pendant to order you pizza at the touch of a button??????????????????????????
(This is for old men who have lots of money and lots of time and are looking for adult-toys to show off to other adults.)
6. The bionic boots also look okay, but how long does it take to safely stop running?
7. The Kingii... it can lift a 40 kg child. Can it lift a 75 kg adult? The balloon is about 10 liters (by my approximation), that means he negates roughly 10 kilogramms of body-weight when in water. It won't save you when you are unconscious, you still have to swim. Still... at least it's partially usefull.