I can't try and get this point across, but knowledge is free this weekend. Get inspired by art (or weirded out by it) revisit the past. Just learn and better yourselves for free. I almost got lost in thought at the LA Art Show with so many wonderful and different pieces. Just let yourself unravel and get inspired at one of the many different art venues. Also, museums have free days all the time just check the web-sites. There's so much beauty for you to enjoy. Not, only beauty, but you can learn some history and then maybe when you get home google something and learn even more
Full list of museums is here.
I'm, kind of saddened to not see the California Science Center, jerks.