I have to use the old "Waterproof Cooling Fan" diy transformation from the cage. Very creative and environmentally green, specially recommend to you to learn Guo Friends of reference. Old fans is how recycling can become Grasshopper able to live in a cage and will not run out of it, depending on the "Waterproof Cooling Fan" occlusion rack density, the size of my home fans and density fits the requirements, so there of this diy. Grasshopper old fan diy small cage, no hand-woven responsible processes and procedures, you just need is a screwdriver, pliers and a soldering iron. First, remove the old fan screws, the "Waterproof Cooling Fan" stand out from the demolition and removal of the inside of the blades, the left frame and cover. Borders and wipe clean cover after washing, and retighten the screws. We can find a big hole behind, which we use other materials, such as metal or wood blocking, otherwise Grasshopper ran away.