Check out this latest invention, for just $8, the hydro clock will run using whatever it is you put in it. I suppose anything that contains H20, so milk, tear drops, sweat, beer and pee too? Basically, it is eco friendly as it needs no batteries, completely harmless to the environment and will run forever and ever and ever and ever!

If you get given one of these, you will never have the chance to be late again, so be warned!

[via Product Page, Random Good Stuff]