Last night for mutual was our temple night to do baptisms for the dead, which replaced our regular Tuesday night activity. Unfortunately I wasn't able to attend, as I couldn't find a babysitter for my son. It sounds like everyone had fun, and I'm sure they all enjoyed going to Tito's Tacos afterwards, which is tradition in our ward and a Los Angeles classic.
If you would like, you can learn a little bit more about baptisms for the dead here or here. For those who are fortunate enough to live close to a temple, this is a regular activity. Our youth are usually able to go once or twice a year with the stake.