If someone made a registered adapter for a 20 Ounce coke bottle it would be worth a try. Stuff some paper towels in there and it'll probably be better than an oil filter as theres more usable volume.
I bought the first one a couple months ago and they just came out with the wireless model so I had to get it ;)
Compared to the original this one has a jamnut to secure the end, and included two spare mirrors.
Its a cool but humbling device. It'll show you that your cleaning process generally...