Good links, folks. A few well-known songs that work well with children are Dayenu, Zum Gali Gali, Hine Ma Tov, Hallelu, Shalom Chaverim, and the Hanukkah songs mentioned above. These are all in Hebrew.

For Yiddish songs, how about Sha! Stil! (Der Rebe Tanzt) and Hob Ich Mir A Mantl (I Had A Little Overcoat)?

Genie