S.T.A.L.K.E.R artifacts models?

Hi, I'm looking for someone making artifacts from S.T.A.L.K.E.R games. I'm going to make some models of them, so I'm just looking for someone, who tried to make some? Does anybody have any perception? For example, which materials are good, which are not. I'm want it for larp action next year. I tried plastic (polystyrene), but it's so fragile. I wanna try melt PET plastic from bottles. Glass is absolutely unuseable. Some tips for transparent, solid material, which is easy to obtain and work with it? If someone tried to make some models of artifacts, send photo :)

Thanks