What's this part come off?

Hi all. Did a job on my bus around the driver's side dashboard area few weeks ago..i was doing the relay flasher change so I can flash people!
Anyhow..I had the following part left over after the job..can't see where it's come off.. anybody recognise it..looks like a cap off something..about 20mm diameter.
Tnx..

 

Is it one of the dashboard screw caps.

I was just reading another thread about them.

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Where are they then?

 

The screw on the dash down by the windscreen I believe.

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http://thelatebay.com/index.php?threads/dash-board-screw-cap.85254/#post-1630362

 

A very small flying saucer, I wouldn’t sleep in the van until you have found the aliens or you might get probed

 

Could be the centre piece of a dash knob

 

Sorted..thanks guys..like you say, it was the cover for the dashboard screws..one of mine had popped off.
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