These are my two favorites, a Ruger 10/22 in a dressup kit and a Colt conversion unit on an S70 frame.
Others that I enjoy when I go out shooting are a "custom" 4.25" Smith,
a CZ 452, and the Henry pump my wife bought me a few years ago.
This old Savage is neat, but I don't use it that much....
Another project I have is another 10/22 "grease gun" with a Charger barrel. I won't post any pics of that one, its pretty crude. But it shoots, and has knocked many squirrels out of trees.