Maagal has a variety of workshops for you to choose from for your next birthday party. Puppet Theatre (shlomo carlbach style - 1200 NIS for 45 minutes, can be in English). They can also help you rent a jumpy castle, run Chocolate and Balloon workshops, Circus and Magician workshops.
You can also have your birthday party in the bowling alley room in Lev Talpiot Mall (795 NIS for 1.5 hours)
Check out our Fun in Jerusalem specials and offers.
Jerusalem Restaurant Coupons
Great resources for Bar/Bat Mitzvas in Jerusalem and Birthday Parties.