Little easter egg I found, since I'm trying to unearth the last stuff I didn't know about this game: in the deeper floors of the Sewers (I found this on floor 22), there's a valve that can show up. Turn it and the fountain in town turns back on, allowing you to get a free 10% growth boost to all stats, as long as you keep interacting with the fountain when you return from a dungeon.
In other news, trying to find the last of the Rena puppets. Anyone know where all 6 of them are? There's 2 in town, 1 in the canyon, 1 on the beach... where's the last 2?
EDIT: Found 'em. There's 1 at the Docks and 1 at the Electric Mine (top of the entrance to the canyon, next to the save point).
And by the way, if you want to redeem the prize for finding them all, you have to talk to the puppet next to the final dungeon.