My son is crazy about baseball this year, so we had a sports/baseball party for his 5th birthday.  Since he is on a T-ball team, he wore his uniform for the party. I also dressed my 18 month old daughter in a cheerleader outfit.  We had a sports arena bounce house for the entertainment. For the food, I served foods found at a concession stand.  We had hot dogs, french fries, popcorn, and hot roasted peanuts. I also sent each child home with a bag of cotton candy. The cake was decorated with my son's T-ball picture and had baseball bat candles. For the decorations, I put out small megaphone, pom poms, and sport banners. After the party, each child left with a picture I took of them posing with my son't bat and glove.  The kids had a great time, and I got alot of compliments from all the parents.