1. Underwater Hair dryer.
2. A parachute that opens on impact.
3. Non-stick glue.
4. A telescope that makes objects look further than they really are.
5. A microscope that makes objects look smaller than they really are.
6. A solar powered flash-light that only works during the day.
7. An anchor that floats.
8. A waterproof bathing sponge.
9. Waterproof tea-bags.
10. A battery powered battery charger.
11. Silent alarm clock (or an alarm clock without an alarm) .
12. Sundial without a dial.
13. Braille Drivers Manual.
14. Double sided playing cards.
15. Ejector seats for Helicopters.
16. Adhesive toilet paper.
17. Permanent band-aids.
18. Invisible ink.
19. Unsweetened sugar.
20. Unbreakable eggs.
21. Scratch-proof scratch-cards.
22. Refrigerators designed specifically for Eskimos.
23. Fireproof matches.
24. Non-alcoholic alcohol.
25. Non-rising yeast (for sponge cakes).
26. Brake-less car-brakes.
27. A speedometer that shows that you are slower than you really are.
28. Flash-less camera for taking photos at night.
29. Water-absorbing umbrellas.
30. Fire-less firewood.
Many of the jokes are contributions from our users. If you find anything offensive and against our policy please report it here with a link to the page. We will do everything to make this an enjoyable platform for everyone.