On Tuesday, 5 February 2019 20:43:38 UTC, Andrew Gabriel wrote:

There's a good wiring regulation in many of the US states.
You must be able to plug in an appliance positioned anywhere
around the edge of the room with a 6' lead, without the lead
crossing a doorway.

Sounds sensible, and a worthwhile rule of thumb to consider.

Thanks everyone for the comments. It seems there's near unanimous agreement that short multiway extensions leads for AV/etc kit are the way to go!