What are /r/carAVclassifieds' favorite Products & Services?

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I run this for bluetooth at a bargain

That link is where i bought the CCF and it is still in its roll, untouched (37.5 Sqft). This is the Kno Knoise i bought and id say i have roughly 40 sqft left but i can measure to make sure.

Please feel free to ask questions.

edit -http://imgur.com/a/E0MFj the last 3 pics are the CCF installed on the roof of my old car so you can get an idea of what it looks like and how it holds.