I was recently working on This Instructable when I realized something. I was pumping up soda bottles to very high temperatures, and then shooting them with guns to make them explode, you know, for the lulz. I tried to set the targets off with an array of powerful Airsoft guns, and they would simply not explode, or leak, or dent, or really do anything but go *plink*. These bottles were pressurized at about 80 PSI, and I was shooting at pretty close range (okay, closer that was really safe, but let's just disregard that right now) and nothing happened to the bottles. This got me thinking. I depresssurized the bottles, and went after them at a range of about half an inch with all of my Airsoft guns. Not a scratch. The plastic in these bottles is clear and flexible. My basic question is this: do you think it would be safe to make these bottles into goggles for Airsoft? I have been wanting to build some different masks for a while, to my own design, but the lenses have always been a problem, because they are expensive, inflexible, and cannot be easily cut or shaped. This bottle material is clear, practically free, appears to be just as tough, and can be layered without any visual distortion. What say you, Instructables?