The swing-out bracket is a West Marine #545574 "Mount-Basic", about $60.
The GPS holder on the left is by made by RAM; they make models for many GPS's.
The VHF radio came with its own bracket.
The Speedmate Knotmeter is presently velco'd onto the swingarm. It comes with its own bracket and I'll attach it to the swingarm with bolts or machine screws when I get around to it.
The gray toggle switch on the left end of the swingarm is for the steaming lights so I don't have to go into the main switch inside cabin if I start my outboard at night.