I don't have a game room/man cave per se, so most of my carts stay boxed.............right this very second, it's easy for me to put my hands on the following 2600 carts:
Atari Centipede
Activision Ice Hockey
Don't have anything to put up this second......but I discovered the game creation tool, 'Bitsy' a while back at itch.io It is SO SWEET!!! Loads of images to follow soon!!