Cheap material thats heat resistant and clear

[tjyoun3]

Hi all,

Im inventing a new product and need some advice as to what material i should use to create part of it. The goal is for it to be a clear material, thats heat resistant (wont bend or misshape) when a lit cigarette is touching it. Basically i just need to figure out what cheapest compound can be used as an ash tray almost. If i need to provide clearer instructions as to my request, just ask. Thanks!

[zapatos]

Glass.