Why the need for non-classic GM event rewards?
The Realm of Heroes goes back at least until March 2001 (3 months into Velious). "Small" GM events would reward players with a coin to turn into the linked NPCs, rewards were random.. which I imagine makes it hard to duplicate here, as I doubt there's an alla entry for quest rewards.
Vorshar the Despired makes it look like quest rewards were also on their loot tables, which seems silly/wrong.
Earring of the Oakwynds example of an earring my Mage received from a turn in... Nothing BiS but good stats and unique enough if quest-only for smaller, more frequent GM events (hooray!).