I collect a few of them them post them on Craigslist for free. I’ve had all sorts of people that pick them up and make good use of them. From preschool teachers that use them for arts and crafts to fisher men to store or ship fishing poles.
A few years ago I tried the cheaper stuff from express window films on front windows. When people came back wth Tint tickets it would peel of clean. I don’t remember exactly which line of their in house film it was but it was an NR.