Jewish Agency, Department for Jewish Zionist Education
Activities for children - arts & crafts, costume activities

Aish Hatorah: Greeting cards, purim songs, arts & crafts 
http://aish.com/holidays/purim/

Bnei Akiva/Hadracha: Activities for youth groups [English/Hebrew]
http://www.hadracha.org/default.asp?ct=174

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

Nurit Reshef: Worksheet & activities
http://www.bus.ualberta.ca/yreshef/purim/purwork.html

Shlock Rock: Purim lesson plan with music
http://www.shlockrock.com/main.php?pg=lessons/lsn_purim.html

Virtual Jerusalem: lesson plans, discussions, activities
http://www.virtualjerusalem.com/jewish_holidays/purim/eduprogr2.htm