We purchased our prizes from Rhode Island Novelty. I was pleased with the service we received, the timely delivery (less than 1 week for free shipping!)and for the most part, the quality of what we received. I was also pleased with the fact that we could return unopened packages for a small fee. We had prizes for 5,10,20,20,40, and 1 60 point prize. I used a formula found on this page to determine the number of prizes to order.
Schoolcarnivals.com Estimating quanitites for carnival prizes
We probably had about 1/3 of what we ordered left over. It was still a guessing game. I based our numbers off of last years ticket sales.
I found that quite a few kids got all 50 points. Next year I am recommending that we only have prizes to 50 points rather than 60. We had 15 kids out of 400 get the 60 point prize. I was surprised by the number of people we had choose 2 10 pt airplanes instead of a larger prize. I could get anyone the exact #'s of prizes we used, but it was based on our 480 person school. We rounded up for all of the kids when they were cashing in if they did not have an exact amount of points.
We borrowed games from another school that does their own carnival. We purchased a couple games and made some as well. We checked out the prizes at Fun Services, but found them to be quite expensive and junky compared to RIN, and were able to buy some games with money we saved. ustoy.com and goodtimeattractions.com have several games on them. Schoolcarnivals.com also has a nice list of game ideas.
I can try and post our point card in the share this file tonight. Hope this helps!