I have many of these Steadicam 4 gen IPod touch stands. One can attach these to your dash for your iPod touch through the 1/4"-20 female threads.
More specs at this website:
Steadicam iPod touch 4th Gen Smoothee Mount 810-7435 B&H Photo
$15 for three (3) stands shipped. Will not ship in box but instead I will ship in envelope.