a little plastic thing shop?Having nothing to do with ATs and their fluids do you know where you would buy one of those little plastic things that stop the drivers side mat from slipping forward under the accelerator ?
try a carpet place. I have seen some plastic teeth that you can attach to mats with a couple of stitches that grip the underlying carpet but have never tried them.
I have no idea what items you actually mean. I have had rubber mats in mine that ride forward, twist and do things rubber mats have no right to do. I have tried velcro with some success but keeping it attached to the mats is the biggest issue. Never bothered with the "plastic" teeth things. The mats I have now don't move much day to day, and about every week to 10 days i just twist them back straight. Never had them ride forwards, just rotate due to me screwing them with my feet as i get in and out.