pic of cylinder wall

I use a single edged razor blade held at right angles as a piston scraper. I am sure there are plenty of good methods. Ditto for the top of the cylinder.

If you are changing rings, make sure you buy/borrow a groove scraper/cleaner and clean the ring grooves.

Most of us are born with plastic spoons or one of those tiny wooden ice cream spoons in our mouths... that is just the way it goes LOL