The container is small, but I doubt it will hold much in the way of trading. Please be aware that this area does have rattlesnakes and that it is always unwise to stick your hand where you cannot see.
This cache will get you out of the car and let the kids run around for a few minutes. If you have some time, there are covered picnic tables and grills. Oh yeah, and there is a lake here! Well its called a lake, but its really a pond. There are turtles here if you look closely. Enjoy.