Also great for kids of age to carry a house key - Bracelet key, no more putting keys in your pocket. Great for jogging and wearing pocketless pants. Dude I'm 14 and I still lose house keys I need this badly.
Eco Bath System Designer Jang Woo-Seok, a student at Seoul National University, created the Eco Bath System which reuses up to of the total water consumption. The Eco Bath System accumulates sink water in order to be reused to flush the toilet.