This is a very quick and easy way to make a homemade popfilter for recording vocals.
"A pop filter or pop shield is an anti-pop noise protection filter for microphones, typically used in a recording studio. It serves to reduce popping and hissing sounds in recorded speech and singing. It can also protect against the accumulation of saliva on the microphone element." -Wikipedia
I think the total of these materials was around $5. I'm sure there are alternatives. I picked up most of these supplies at wal-mart. They only had C-clamps so I had to go to a hardware store to get the other clamps.