The Druck Collection of Kibbutz and Secular Haggadot
From the University of Toronto in Canada comes this collection of kibbutz and secular haggadot dating from the mid-1930s to the mid-1990s. Most of this material was produced in-house by various kibbutzim, youth movements, and army units for use at seder celebrations.
Holiday Music Playlist
From the National Library of Israel comes this digitized collection of songs and prayers for the Jewish holidays that you can listen to and download in mp3 format.
Kibbutz Holidays Institute
This Hebrew site houses the collection of secular liturgical materials for Jewish holidays compiled by Aryeh Ben-Gurion, a founder of Kibbutz Beit Hashita. The material is browsable by holiday and life cycle event and a list of the institutes publications is also available.