I have own and fiddled with guns for 55 years. Nothing extreme but a lot of trigger work on a wide variety of guns.

For S&W revolvers,

The Brownells Magna Tip screwdriver set for S&W, a couple of hard Arkansas or ceramic stones, a Hex head key set, and a rebound spring removal tool is all I have ever used to do everything needed.

Unless you are getting into serious gunsmithing I really don't see the need for much more.