House Rule #1: Spellcraft

Cleric, Druid or Wizard characters (not sorcerers, who have inborn powers rather than studied or bestowed ones) can add their Spellcraft ranks to their rolls when making any kind of magic item (potions, scrolls, rings, wands, or anything else that would be a single-use or multiple-use item that mimics the effect of any spell or other magical effect in the game. I'm choosing to interpret "spellcraft" as the way magic users channel the background radiation of arcane energy into a desired effect. Instead of requiring a wizard to learn armor smithing to make magic armor, Spellcraft means they can shape metal based on what they need it to be through arcane skill alone. This is mainly to make things a little easier for artificers and to make a steampunk / magic world depend a little bit on magic to make wonderful things.