You’ll need:
Smooth stones or rocks
Tempera Paint
White Glue
Brushes
Directions:
Wash and dry stones. For a paint that will adhere to stones, mix paint with glue, using approximately two parts paint to one part glue. Now for the fun. Create your own pet rock dinosaur either by painting the stone a background color and when dry adding a design or by leaving the stone its natural color and painting the design directly on the stone. For a glossier finish, spray with clear lacquer when the paint is dry.
References / Source:
Longhorn Council