Shiny, unused d12? The solution: The Dungeon Dozen.
The premise is simple, over 200 system agnostic tables for fantasy role playing games using d12. On first viewing this PDF looks excellent. There's tons of artwork. Content wise there's tons of creativity, both useful and mental ideas (Features of the Pleistocene Island: #7 Giant Cave Halflings) but nothing dull.
Is it essential to running your game? No. Is it a pleasure to read? Yes. Will it see use at the gaming table? Absolutely.