Alchemy Table

The moment you clear the dungeon, put one of these down and never set a bottle on a table again. Every brew has a solid chance of handing back each ingredient it used, rolled separately for every unit, so over a long crafting session you finish with a noticeably bigger pile of potions from the same herbs. Nothing about it is worse than the bottle. It even counts as furniture for a house.

The gain shows up on ingredients you have plenty of. If a recipe needs one thing you only have a handful of, that item runs out first regardless of how the rolls go, and the table cannot save you. Plan your farming around the scarce component and treat refunds on common herbs as gravy.

Harvesting your herb garden with the Staff of Regrowth already returns more per plant. Feeding that into the table compounds the two effects, and it is the difference between brewing enough potions for one boss fight and brewing enough for the rest of the run.

It sits in the dungeon as ordinary furniture and is easy to walk past while you are busy not dying. If you already looted the place and missed it, fishing in dungeon water will turn one up eventually.