Just wanna say thank you to JEFFAR420,BigBudDaddy08 and green_gardenr for the advices. It's so hard for me to find all the things that ppl are using in here bcos of the place i live. I wisht there's a wallmart in the area i can get everything in one go.

I found this aluminum thingy in the grocery store near my house. Does anyone know what is that? can it work better than the aluminum foil?