companies that give FIRST discounts

I am finishing up a seminar that i am giving on the Kit of parts and one of the last think i am trying to do is look for companies that are known for giving discounts to FIRST teams, any information anyone could give would be helpful

an example of what i am looking for is like www.itemamerica.com (extrusion) they have a FIRST discount at the bottom of the page.

I believe skyway wheels gives a discount to FIRST teams, however I do not have the information about it. Last season they faxed us a special FIRST order form to use.