When I joined, we played on a call center map for about 15 mins.
I decided to take a chance and go as a trash can. I set myself into place right next to a chair in one of the cubicles, and sat there the entire round. I used all my whistles, even when a CT was right next to me.
Another: Playing on office, I chose keyboard. I used myself to knock the regular keyboard out of place, and take it place. Like, exactly where it was. I had a few CT's come over and shoot EVERYTHING around me, and bring me down to 6 HP. I managed to finish the round in the same spot.