First, read Holiday Party and Carnival Basics for general overview of the what, how and why of kiddie Jewishy festivities. All my party stations are uber-thematic, educational and irresistible.
Planning a small party or huge carnival for Purim? Find stations at this post:
PURIM CARNIVAL STATIONS
Pick the ones that will fit your venue, guest list and age ranges best.
Interested in trying a Carnival-esque, Mitzvah-centric alternative?
Find my version at this post:
PURIM CARNIVAL ALTERNATIVE, MITZVH-CENTRIC