Simplicity, simplicity, simplicity is key. At least for bank fishing.
All of my bass so far have come from a small backpack with two plano boxes of hard bait, three or four soft plastic packs, some hooks & weights, and a spinning rod. I'm currently purchasing a baitcaster, so that will be added to my arsenal, but I really don't foresee me getting too much more tackle except an occasional splurge on tacklewarehouse and stuff I need to replace.