tethered internet is the only internet access i have at the moment, so heat has become an issue. i've solved it in some not-so-practical ways such as putting the phone in the window on a cold day or setting it on a box fan lying flat. i wanted something a little more practical so i made this:
it consists of an extended battery back, a fan from a 486 heatsink, and a 12v AC adapter i had lying around... cost me a total of $18 on ebay.
i just drilled holes for screws and cut a 1.25"x1.25" hole for airflow.
as you can see, i scratched the back a couple times while cutting and drilling, but this wasn't made for looks
sorry i don't have any pictures of it on the phone, but my phone is the only camera i have!