Sliding Plates

What do people use for sliding plates? Particularly if you work out in a non-carpeted area (like most gyms), I'm curious what can be used to slide around in exercises like AG Walks...

Definitely depends on surface. Even if it's not carpet, furniture sliders still often work well. If it's a slippery type surface like a gym mat, just wear socks. Or attach a carpet square on the bottom of a Frisbey.

I just have a carpet square I use on tiles/hardwood.