Collect
the rocks you want to use and wash them off with the hose. If you
do it in the sink, you may get sand and pebbles in the drain and it
will ruin your disposal. After washing rocks, place them on a baking
sheet. Turn the oven to 250 degrees and leave them in for an hour.
Remove from oven and with an oven mitt or towel, place stones on paper,
place mat, paper plate, etc. Without touching the stones with your
hands, use the crayons to begin drawing. The crayons will begin to
melt from the heat making it easy to draw. Allow to dry.
