Wizard: Select one item creation feat known by the wizard. Whenever he crafts an item using that feat, the amount of progress he makes in an 8-hour period increases by 200 gp (50 gp if crafting while adventuring). This does not reduce the cost of the item; it just increases the rate at which the item is crafted.
which requires them to know the feat (say, craft wondrous item) first. someone used a rebuild to throw lvl 1 and 2's fcb into that one.