Here is the main contingency page on NASA's website.

Remember to submit for your Toyo Bucks, Hawk bucks, VP, etc. Also look through the list of contingencies as most of them are consistent season to season so you can prep for next year to make sure you have the required decals on the car to claim your $$. The Toyo and Hawk bucks are the only ones I have done so far but Steve mentioned the VP contingency is great for fuel jugs, coolant, and other items.

If there are any other contingencies y'all have had good success with, please share here so others can take advantage of them.