Let's not forget something here.
While craft contingency is a nice feat, most DM's will not accept it duh to it's innate borkedness.
We are, at least i am, speaking of the level 6 spell Contigency, and that spell has very restrictive features:
[spoiler]Contingency
Evocation
Level: Sor/Wiz 6
Components: V, S, M, F
Casting Time: At least 10 minutes; see text
Range: Personal
Target: You
Duration: One day/level (D) or until discharged
You can place another spell upon your person so that it comes into effect under some condition you dictate when casting contingency. The contingency spell and the companion spell are cast at the same time. The 10-minute casting time is the minimum total for both castings; if the companion spell has a casting time longer than 10 minutes, use that instead.
The spell to be brought into effect by the contingency must be one that affects your person and be of a spell level no higher than one-third your caster level (rounded down, maximum 6th level). Whenever any harm is aimed at me or at the zone I am standing in: time stop. It kinda gives you a lot (thought foresight, celerity, timestop is just as good).
Keep em coming in guys.
I'll give props to aftercrescent for this one:
Whenever I am the targer of any harm: etherealness, swift.