Best way to hide this?

[fulltimes]

Been a chronic for years and gathered a couple random seeds here and there so I thought, why not spend a couple bucks on a fluro and plant some seeds and see what happens. No growing knowledge whatsoever but I didn't care if it worked or what the yield was, just doing it for fun. Well god damn it is fun. Once they grew a bit and I had done a lot of reading up and actually had some idea what I was doing, I realized it would be stupid to flower them under the 5000k fluro. So I bought a used 250w hps (my area is very small and I don't want to take up much power). Blew me away how bright these things are.
Anyway I just want something I can hang inside the closet, right behind the door that will block out the light but still let air in/out (there is no exhaust just air that passes through the closet) and NOT flamable.
Any suggestions?
Should I just build a grow box?
Here's the inside of the closet, its about 2' wide x 3' deep x 8' high:

Edited by SmokinMom- please upload your pics to this site. It's not safe to post images hosted elsewhere from places such as Photobucket. Thanks.

[yungmune]

no way you would be able to seal off light going through those cracks. build a grow box or move your grow area. good luck

[Amon1011]

you can try buying some white/black poly http://htgsupply.com/viewproduct.asp?productID=52089
strip a few together hang it and if you want it completely sealed you can buy velcrow from a lowes for cheap and line it on the sides

[fulltimes]

Trust me if I had anywhere else to grow, I would do it there.
A little light is fine I just don't want it to look like the portal to hell is in there, and I can't completely seal it or there'll be no ventilation. Black/white poly strips sounds like a great idea. Couldn't find it anywhere though except online.