[Angry Hill Troll]

Gollum's fantasy about what he would do if he got the Ring back is actually somewhat similar to Sam's, when he is trying to rescue Frodo and looking out over Gorgoroth, and thinking about what a nice garden Mordor could be turned into. Maybe that's just a thing about hobbits, which (relatively) keeps the Ring from causing too much harm in their hands:

Sauron: "With this Ring, I will rule the World!"

Saruman: "With the Ring, I could rule the World!"

Galadriel: "With the Ring, I could rule the World!"

Gandalf: "With the Ring, I would be tempted to rule the World!"

Gollum: "With this Ring, Sméagol can have nice fishess to eat!"

Sam: "With this Ring, I could do a nice bit of gardening in this ugly wasteland!"

Bilbo: "With this Ring, I can give the cursed Sackville-Bagginses the slip!"

Frodo: "With this Ring, I can...uh...look for someone to take it off my hands!"