Plexiglass mirror - unbreakable (Browns Line/Lakeshore)

Looking for a piece of unbreakable plastic mirror - typically plexiglass material, about 12” square (bigger or somewhat smaller - exact size not important). I could cut a much bigger and random size piece down to fit my need, as well. This material is usually about 1/8” thick with mirrored back. Thank you. Can pick up any day or time, porch pickup etc.