One thing we have enjoyed in the past as a family is watching plays. We find local plays at colleges or go into the city to see an Off Broadway play. We have enjoyed both levels. But some of my favorite plays to watch are the ones my family have performed in. Both my kids and my husband have been in local productions. Before our son was born, my husband performed with a small local community theater. After our son was born, it was not a conducive atmosphere and my husband did not perform again for many years.
When my son was 12, both he and my husband appeared in Oliver! and a few years later my daughter and husband performed in Annie Warbucks. It has become a fun family affair!