Here's my list updated with some part numbers:
1 - sliding part of latch for, for example, the door of a timber framed house - 30 60 0730 comes with retaining clip
5 - securing pin for top rotor of older helicopter - 30 61 1420 comes with securing pin for tail rotor
8 - rear view mirrors of 3181 fire brigade lead car - 30 45 4670 (right hand side) and 30 45 4680 (left hand side)
9 - base for, for example, road traffic sign - 30 20 3040
11 - pneumatic drill - 30 60 1550 comes with handle for compactor
21 - control stick from helicopter - 30 60 6940 come as a pair with a pair of joysticks. Originally, I thought what was in the picture was the joystick but it isn't. The picture shows the control which goes on the cockpit floor by the side of the pilots' seats.