Microphones
A set of several different microphone props would be great. Could have the massive types from the forties and fifties, but also the usual ones we all recognise for the stage (for singers and speeches). Both could come complete with optional stands. Also, microphone booms for film and TV sets (with and without those furry 'wind protector' things).
Could see the stage-based ones having easy-posed cables and also being in wireless versions.
And perhaps one or more headsets, too. One with just a microphone, such as some singers are now wearing on stage, as well as another with earphones attached, so that a computer-user or call centre operative could be depicted. And, of course, a version which would look ideal for use by pilots, tank commanders and other military personnel. Possibly a more discrete model for Special Forces and security/police to wear during covert operations, too.
Bonus points if Genesis 1 and 2 holding poses are included!