I often resort to this energizer when participants are changing tables for the first time, or they are strangers to each other.
I ask them to write down five things about themselves on an index card, five things about: a hobby they have, a place they have been, a language they speak, something they have done or accomplished or anything else about themselves that they believe no one else at their table has experienced.
They announce their experiences to each member at their table, and win one point for each experience no one else can duplicate.
This way, they get to share things about themselves and break the ice.