We had visited the library and got Gardening with Children by Kim Wilde ( yes the 80's pop singer). It has some great ideas on how to incorporate children's play into your garden.
We had an empty barrel that the husband had intended to grow lettuce in but never did. After adding pine cones, stones, and shells, along with some twigs of rosemary, we had our dinosaur garden! Little bear played in it until tea time, which was just what I needed.
If the rosemary doesn't take I will plant something more permanent. He really enjoyed placing the stones and twigs in sections then hiding each if his dinosaurs in the make-shift forest! He was so sweet pretending that they were having acorns and conkers for their tea until T-Rex came and ate them up!
Isn't he just too cute?