7 Greatest Polish inventions

I have nothing against polish people so this does not in anyway make me wrong.
I just remember these from grade school...

1. Submarine with screen doors
2. A book on how to Read
3. A waterproof towel
4. Glow-in-the-Dark sunglasses
5. A dictionary with an index
6. Helicopter with ejection seats.
7. Solar powered flashlight. (this one is for real)