Quest item tooltips for Classic Era: see which quests need an item — green: in your log (with have/need), yellow: not done yet, blue: repeatable, red: completed. Plus 'can be deleted' checks for quest leftovers and cleanup offers after turn-ins.
Weapon tooltips answer: can I use this? Green = skill known (with level), yellow = trainable, with your faction's weapon master cities, red = never. For Classic Era, Hardcore and TBC Anniversary.
Keep, bank, or sell? Reagent tooltips show every recipe a material is used in, the color-coded skill range that still gives points (orange/yellow/green), and whether you know the recipe - for all professions, at a glance.
This is a simple addon that brings a currencies tab to the character menu similar to WOTLK to track various badges. Also there is an option to automatically transfer each badge to the bank once the bank is opened.