Any good US or online locations in the US that you can pick up sheets of foamboard at? I'm looking for different thicknesses like 1mm, 3mm, 5mm, etc...
You can get that at a Walmart, Target (stores of that nature).that I know of, what i'm looking for is the foamboard, which is a heavy "cardstock" (for lack of a better word) sandwiched with a dense foam between. It's used for structures mostly in modelling (houses, barricades, and such). Where the pink foam is more used for hills and things.