Was using a plastic bottle that is frozen, it is a little eco-friendly fan. You can use during the day to keep frozen within a night, you can use when it is not enough little in air only. Rather than the entire room, it makes it only the cool and comfortable around him. We've created a prototype which takes into account the http://geeks-keyofmake.com/ideas/35 mass production from the previous post. We are using the DC fan used in personal computers of cooling. Space-saving in such tabletop, in consideration of stability, it was changed to a configuration like a photograph. We would like to consider the shape of the blower unit. [Please comment! ] Material: is capable of condensation measures to create in the "diatomaceous earth", such as the following link pet bottle insertion section I believe. In addition, we believe that interesting even from being made the whole body in the diatomaceous earth. Please message After one who completed of Someone knowledge or trader your acquaintance! http://soil-isurugi.jp/product/detail/bathmat.html DC fan and electrical design: prototype uses a USB DC fan of the following links. Wherever possible, I believe that I could be more powerful. In addition, we want to allow the "turning on and off" at the switch, and I will satisfy the above, the step-up and the condenser and the switch is not considered necessary. Person who can advice (might get variously ask maybe ..) reach message please! http://www.yodobashi.com/ec/product/100000001001237097?kad1=1&xfr=kad&utm_source=kakaku&utm_medium=cpc&utm_term=BIG-FAN80U+for+Men+%5BUSB%E6%8E%A5%E7%B6%9A+%E3% 82% B1% E3% 83% BC% E3% 82% B9% E3% 83% 95% E3% 82% A1% E3% 83% B3 + 80mm% 5D thank you!