
It doesn't matter if I don't have a piece of paper I can use right there, because the top of my desk is white laminex.
As I talk on the phone, I subconsciously scribble and draw and take notes on the laminex desk top. When there are so many scribbles that there is no room for any more, then I wipe the top of my desk clean with eucalyptus oil or metho, and I start again.