Have kids build mini survival forts before going out to do it? using sticks and clay. Intro into what materials you'll need, what you can realistically do, and how to work together for a real one. For visual learners.
This is a fabulous way to incorporate nature-provided ingredients into a fun, hands-on activity. I suggest it could even be used to create a lesson in science and/or nature study by learning about the herbs and spices themselves.