I didn't see many people talk about these non-slip foam pads for the G3. I'm not affiliated with the seller at all, but these pads are worth every pretty penny. They are precisely cut and are non-slip on both sides, very happy with them. The seller even provides some double sided tape for the pads that need to go an an angle (like the lower glove box pad). I go crazy over rattles so anything to "minimize" or dampen them is welcomed. Just thought I'd share my two cents in case there are more like me.
There was a thread on these last year, and I purchased a set--they are nice. http://priuschat.com/forums/gen-iii-2010-prius-accessories-modifications/66244-console-pads.html