I have yet to use this recording for anything. I made it about a year ago when I was working on the sound design for a 3D animated short. It was one of many sounds that didn’t make the cut, but still has an interesting characteristic or two. We’re all familiar with the sheet metal wobble. The plastic mat wobble is similar, but with less racket and a sort of low frequency rubbery quality. I must have been holding my breath during the recording because you can hear me breathe in deeply at the end.
Wobbling a Plastic Cutting Mat
This recording was made with a Shure VP88 stereo condenser mic on a Fostex FR-2LE field recorder as I was leaving work this evening. I usually exit out of a back stairwell with cement steps and brick walls. In other words, loads of natural sound reverberation. 
This sound was captured accidentally in my living room as I fiddled about getting ready to record my piano. The hardwood floors created some serious low frequencies up the mic stand as I was moving around.