Device to hold Palm Treo 650 PDA

I have looked at various devices to have my PDA/cell phone on my dashboard somewhere. The best one I have found so far is at proclipusa.com Model 853437. However at $30 plus shipping I would stillneed another apparatus to hold onto the phone itself...I have something I can modify at home, I believe. Has anyone purchased a cell phone holder that works well in the Prius that doesn't cost this much. Thanks.