yeah, bullet pullers ... real men that are real careful don't need them
also, GOOD calipers, and they come in a lot of different types (some are actually very specialized, as you become more knowledgable you really need the special types to check the minor details)
the more times you use brass the more tools you need to extend case life and consistency... if you're just tailoring loads for basic function, cost-savings, reduced-recoil and the like and don't plan on making sniper-grade ammo or loading cases 12plus times for high volume shooting you can get by very basic
make sure that if you use really fine powders that you disassemble your powder dispenser as much as feasible and clean it out (mine is mechanical and I disassemble it completely, wash it out with slightly soapy water and airdry)
get a good funnel so you don't waste handfulls of powder, and a storage cabinet to keep it separated, and ziploc bags for draining a powder measure to prevent spills and also to check it as it comes out to look for contaminants--and to make sure you can see it before you pour the excess back in the can-- I almost put some Wincheste 231 in Trail Boss One Time-- would have cost me fifty bucks because I'd never get the 231 sifted out of there
a poster of the joker that says "why so serious" it helps me