I use a belt clip to clip my cellphone to the dash.

[img]http://store1.yimg.com/I/cellphoneshop_1868_99055474[/img]

The piece on the right attaches with double-sided tape to the dash. The piece in the middle attaches to the back of my phone. It holds the phone well, is not distracting at all when I don't have the phone in place, and can probably be used on any device you want to attach to your dash.

Oh, they're about $4.95 at Walgreens . . .