I made one by myself too, as the options I found were not that good. Seems to work fine for now, more testing needed though Here is what you need if you wish to try too: Suction cup mount (I used this Garmin version): http://global.ebay.com/Suction_Cup_M...524546870/item Plastic cover for n900: http://global.ebay.com/Black_Rubber_...556286203/item + Some glue ment to attach plastic