I suggested this in discord and I believe someone liked it:

Mission Plotline: A group of adventurers go to the lava flows of what was once Lornius to mine obsidian. Unfortunately, they come across a graveyard amongst the cooled down lava - and worse, a golem forged by lava.
Spoils include: Obsidian specially enhanced to be less brittle; and have a permanent heat damage that applies mild burns upon contact. Suitable for weapons.

Then Yvonne suggested we do something else other than a golem. Like a salamander, mythological shout out, or new race entirely.