Read Thread: Night boxes at an event
Install a burglar alarm in the lid of the box, preferably one that sounds like a rattlesnake.
Nope, I would have a heart attack! One box I will never go after!
Using reflective tape or paint, then hide them in trees as well as on the ground.
We've used glow sticks in peanut butter jars with the stamps.
Luminaries with electric tealights.