space, emergency blankets? where?

ok so ive walked all around wally world and lowes hundreds of times looking at stuff and just saying to myself i could grow using that. The only thing i seem to not beable to find or find something else for that reason is mylar. I think my town is just not for people who grow because ive never seen a net pot. so anyways my question is where would i find the emergency blankets?

I plan on building a tent with pvc and black plastic. But on the inside i need reflectivity. I tried to find white plastic but all there was is clear. thanks in advance

Just get some white poly to build your tent and you wont need the emergencie blankets.

http://www.wormsway.com/results.aspx?t=prod&search=white%20poly&cat=all&AC=1

yeah thats what i really want but i dont like ordering anything off the web. I try to keep everything between lowes or wally world. Just for the sake of being able to get stuff local. I got the idea from these pvc tents with the (i think they called it) panda plastic. Just thought it would nicely fit my closet since i dont have time to be a carpenter like i really want. thanks for the input tho