I'm from Texas also. You can contact Cold Stone Creamery for the Ice Cream donation. As far as school supplies, you can contact Office Depot. They have a program that's called Gifts in Kind. I've never participated but have heard wonderful things about this program. Also, Scholastic donates to schools, go to their website to find contact information. Good Luck!
I spoke to the women at Peral paradise and she told me they were putting a hold on their donation program until the end of June, so she asked me to please mail in my request in Sept for my December event. She was wonderful about taking my name and organization down - I had emailed them and she called me back so unfortunately I do not have a number for them.
Got a yes from Disney for 4 hopper passes they are sending three weeks before my event - so excited. Also got a signed autographed picture with a letter of autenthicity from the NY Jets Coach. Rec'd my four passes to Penn Railroad Museum and emailed Chelsea Piers and they work month to month on donations so right now she is working on August donations and goes from there.