Currently, I allow crafting an "air bucket" (empty bucket), that allows you to take 02/CO2 with you. The empty buckets are stackable. Another thing (I hope I don't annoy you xD), I allow crafting a normal water bucket with another thing to this air bucket. But after the crafting the user get's two buckets: an empty one and the crafting result (air bucket). Is it possible to "consume" this bucket fully? So that the user crafts an water bucket + other item => air bucket? Currently it is: water bucket + other item => air bucket + empty bucket. Anyway thank you for your time.