Aside from item level 252 catch up gear and a toy, you can get an Heirloom Trinket from Elemental Storms, the Dragonflight pre-patch event.

With a total of four Elemental Invasions, Elemental bosses have a chance to drop items that can be combined into an Heirloom Trinket. The items are:

Dimmed Primeval Earth

Dimmed Primeval Fire

Dimmed Primeval Storm

Dimmed Primeval Water

Once you collect all of them, you will receive Unstable Elemental Confluence, which comes with the following effect:

Unstable Elemental Confluence – Your spells and abilities have a chance to usher in primal magics, dealing damage to enemies and buffing allies. Approximately 1 proc per minute.