http://www.bconnex.net/~zirgo/treasure/treasure.html A week or three back, someone wanted a simple project for kids. I'd forgot about this, it's about as simple, and relatively safe, unless they glue each other down, as you can get.
Thank you, they made a trivet and enjoyed it.
As it happens, they made this box last summer in scout camp. There were two glue guns. Those who used the guns made a box; those who stuck to white glue made a mess.