Answer:
People say theres only 19 but theres not !
1.computer monitor
2.bottom file cabinet
3.keyboard
4.stapler
5.brief case
6.cubicle wall
7.umbrella
8.pencil the boss holds
9.ruler
10.cup
11.scissors
12.trash can
13.large water jug
14.right cupboard
15.coat hanger
16.chair
17.hands
18.pen
19.clock
20.golf club