Thanks to Janglo, here is a very useful guide to what’s happening during the Passover festival season. It includes Jerusalem scavenger hunts, Dead Sea Music festival, Holon Theatre Song festival, Haifa Children’s Theatre festival, Ein Gev Music festival and sculpting in Maalot.
http://www.janglo.net/index.php?option=com_adsmanager&page=display&catid=99&tid=203017