HandyNotes: Shadowlands Treasures (and rares)

These include:

Items found in disposable chests that mysteriously glow purple.

Objects that fall out of rare mobs.

Items already collected or mobs already defeated are not displayed. It uses the quest flag, which the game relies on to track items. Sometimes you can fail. As a rule, in case of failure you will not get any achievements or items, so most likely, the subject will interest you.

If you don't want to see them, you can hide them by right-clicking on the treasure node; if you have TomTom installed, you can also add waypoints to the node.

To change your settings, go to the HandyNotes Configuration pane, expand Add-ons, and click Battle for Azeroth. You can choose which treasures to display and whether to display treasures already found.