ideas for custom taillgiht lens material anyone?

[avysittinon22s]

Looking to modify the taillights on my 71 fleetside. Looking for ideas on the material to use. I have thought of plexiglass but not sure if it will reflect enought light even with the taillight bucket painted silver. Also thought about fluorescent lens covering, like what you see in office buildings, I wonder if this would reflect enough light? I would like for it to be clear. Please help with any ideas on this, material has to be atleast 12"x4" THANKS