Stardust Herb + Minor Healing Potion = Reasoning Potion
Augmentor + Any Potion = Raises Potion Level (minor > medium > large)
Fanny Blossom + minor healing potion = charm potion
Farhangite + minor healing potion = intimidation potion
washboard + washing tub = washing tube with a washboard
Butter Knife + anvil = long dagger or rapier (might make more than the two, all I've gotten)
Red Mushroom with white dots + minor healing potion = losing potion? Could be because it is used to make poison