The last two sessions for my party were combat-heavy dungeon crawls, so tonight, a treant they rescued in last year's campaign led them to a newly-discovered elven vault in the Misty Forest.
After passing three locks (puzzles) they found a magical crystal tree hidden away, and humbling themselves before it were gifted one of the crystal fruits.
Now they have 2/3 of the things they needs to create or disable war golems.
The campaign's getting interesting.