Quote Originally Posted by 00tec View Post
You're probably looking for closed cell polyethylene foam. Open cell foam is the springy stuff that can absorb liquids and such. Closed cell won't collapse as much. (Like what pool noodles are made of)
Yup, that's what I'm looking for. And right after I posted that, I got to thinking "what about those cheapie 'anti fatigue floor mats' they sell at Harbor Freight?"

I think that will work. $9.00 worth should be more than enough for what I need.

https://www.harborfreight.com/4-piec...set-94635.html

So basically, I think my question has been answered.