Retro culture
Plan a useful retro-game garage sale visit
A garage sale can bring together collectors, casual players and people simply clearing space. Clear labels and patient questions make the interaction easier for everyone.
For hardware, note model, visible condition and which accessories are included. Distinguish tested operation from appearance; a clean case does not establish that a device works. Avoid opening powered equipment during a casual inspection.
Keep a list of the items you need and decide how you will store them before acquiring more. A collection benefits from documentation and manageable scope as much as from an unusual find.