In electronics I'm often stuck waiting for a circuit board to be fabricated or something to be assembled/3d printed, so I line up projects and swap between them

In electronics I'm often stuck waiting for a circuit board to be fabricated or something to be assembled/3d printed, so I line up projects and swap between them: as I'm waiting for one board to be finished I write the code for a previously assembled board that's ready for debugging, then when the new board comes in I switch. This has scaled up to 6 projects until I started running into myself. This system also naturally provides soft deadlines :)