Kitty does not play well with others...

and we have had a lot of people in and out of the house the week and this weekend.
This does not make her happy so she sits in the shop watching me for a while tail twitching bank and forth until that to seems to bother her.
So she sits on her tail, I think to keep it from moving back and forth as if this is just to much for her to take. In this way she extends her control over her environment even if it is just in this symbolic way.  

Of course that does not begin to assuage her frustration at the whole situation, but its a start.