in case you didn't know you can get some items, often flower-type ones, from using green gale on the sprites in your fountain (once per day). it doesn't make a huge difference but it helps.
the labyrinth farming is insanely grindy and i'm probably done with it. 30 minutes per canyon labyrinth x 6-7 possible bosses even using 3 slabs of same type x 10% drop chance (total guess but my observed rate on rare enemy unique drops is lower than this) x 5 items needed = expected 150 hours??? of farming just for ONE item. maybe the boss spawns can be manipulated somehow and maybe the drop rate can be improved - luck gear at least didn't seem to help - but it's still way too much. i was looking online to see if anyone had a better way but i seem to be ahead of everyone so bleh.