Department for Jewish Zionist Education
Activities for children include arts and crafts and costume activities
http://www.jewishagency-ed.org/festivls/purim/index.html

Aish Hatorah
Special features include greeting cards, purim songs
http://aish.com/holidays/purim/

Shema Yisrael
Purimspiel, stories, games, recipes
http://www.shemayisrael.co.il/purim/index.htm

The Holiday Spot
Jokes, recipes, background food, cards
http://www.theholidayspot.com/purim/index1.htm

Holidays on the Net
General Information and activities
http://www.holidays.net/purim/index.htm