A good selection of brass jags. You might have to try a couple different brands or different brands/kinds of patches to get just the perfect fit for your guns barrel. But a good combo is a wonderful thing when you clean.
Brass bristle brushes, not nylon.
Copper scrub pads, (NOT copper coated steel! check with a magnet, the real copper ones will not stick to a magnet)
WeaponShield is great, Breakfree is also.
Q-tips, pipe cleaners, dental probes, shis-ka-bob sticks
Copper remover (use with care!)
JB bore paste!
Good rods, I prefer non sectional. Dewey