Please take time to invest in creating family memories. As a child, I remember MANY occasions playing by the creek acting like a native living off the land. I also recall blackberry picking, salamander catching, and family marches (or Saturday walks that mom demanded for us to partake of, even though we preferred to sleep-in...Thanks Mom for the memory!)
Creating these type memories don't even have to cost lots of money. For example, we recently had a desire to go camping. However, with a new baby and the need to limit extra activities for a few more weeks, we planned a Backyard Camp-out. I asked the children to help with the menu and we enjoyed some Kosher Smores (http://www.joyfuljunction.com/1/post/2010/08/kosher-smores.html) . Additionally, they had backyard racing games and some memorable firepit experiences.
My point is to help you think outside of the box and perhaps ask your children to tap into their creativity to make more family memories!