All you really need is a backyard, a tent, and a BBQ.
S'mores by BBQ is way cooler than S'mores by campfire, doncha know?
Oh, you do also need a husband willing to sleep out in said tent in the backyard, since it would be way too squishy for me to be in there with the kids, too. And yes, even though it was a sacrifice, I volunteered to sleep in the horribly boring house in my horribly boring bed. I did yell out the window "Are you okay out there, sweetie?" to my husband. I am, after all, a loving and attentive wife.