Stretch goals for skill specialists?

[RyanW]

I dislike putting the mission behind a door only one PC has the key to. But bonuses are a different story. You can provide optional objectives with brief but challenging obstacles and their own little rewards to let characters' talents shine. That can be especially valuable if you don't necessarily match the bonus to the one who got it.

If the swordsman's fancy new blade is courtesy of the thief's lockpicking skill, and the bard negotiated the trade for the wizard's spell book, it can create a bit of a mutual indebtedness that can make the party more tight knit.