One of my first illustration assignments was for a book about gardening activities with children. At that time, most books for children were illustrated with black and white art so I made pencil drawings. Here is one of the activities meant for younger children. It would work well with pre-school or kindergarten children.
EGG HEAD
Break away 1/4 of the pointed end of an egg shell, and empty the contents. Have the children draw a face on the shell using felt pens, then fill the shell with moist soil and plant chives or wheat seed. Make a stand from a cardboard egg carton. Place the egg head in the stand. Water lightly each day.
Materials needed: Cardboard egg carton, eggs, felt pens, soil, chives or wheat seed.
From Children’s Gardens: A Field Guide for Teachers, Parents and Volunteers by Elizabeth Bremner and John Pusey, Illustrations by Caroline Arnold