cheap substitute for panda film!

hey guys im thinking of buying some panda film to hang down off my roof to act as like a door but its $50 i could spend on something else , can anyone think of a good cheap substitute. what is panda film ?is it just white plastic sheeting ? lol if it is then im paying $50 for something worth $5-10. im thinking of even getting some shitty cloth and maybe glueing some tinfoil on it lawlz

you could use painters plastic.
but you probably have to multi layer it to equal the thickness of the panda.
to my understanding light cannot penetrate one layer of panda. the white side is for the side you want the most reflection and the black is for no reflection.
i used panda for my windows and to separate the rooms.