Hot Rock Crayon Painting

Be safe with this one!  My kids have been around a camp fire so much so they understand safety.  They are also 12 and 9 so they are older!  

We put some rocks in the fire and heated them up for about 10 minutes.  

Carefully we removed them from the fire and used crayons to decorate them.  

They were melting very quickly and since crayons are wax they should last awhile!