My son Jacob loves Toy Story, so for his 4th birthday it was the perfect theme. When the guests arrived they were given a cowboy hat and red bandana (just like Woody) and Jacob was wearing a buzz lightyear costume. The birthday cake I made was a giant sheet cake that I decorated like Andy's bed with a cardboard headboard and all the little characters from the movie I placed on the bed and all around the cake board. It turned out great. Some games we played were water balloons, sack races, and bingo, complete with toy story prizes. We had a cotton candy machine and had a picnic lunch.  After the party the favors given out were toy story bags with toy story character prizes inside and an extra bag of cotton candy.