On the way out of the gas station today I saw what I thought was a stack of snow cone cups. Turns out they are disposable paper funnels for adding oil to the car. I got to thinking about it and realised that such an item would make it easier to use a coffee filter when pre-filtering your water! I went back and asked if I could have a few and the guy behind the counter gave a stack of 20 or so! Best part is they fold flat. Any thoughts?