IMHO, GAL can be anything, it is just about not sitting around waiting for WAS to do something or sitting around anticipating their moods. You can do stuff around the house, just make sure she is not in the same room. Try meetup.com I am actually finding quite a few things there. With the weather so good, just be outside, while you are saying take a hike in your head to WW, you can actually do this literally for your GAL.
My Ds are 3 and 8 months, you can imagine how GAL would work for me, but I basically stay away from home how much ever I can at the park, shops, play dates whatever keeps me away. We all GAL with whatever our current life allows us. -arshi