Provide some soft materials, like pillows and blankets, for your child to use to construct a rabbit's den. A couple of chairs, a small table your child can fit under, or some stiff couch cushions are perfect for den building.
Then, talk with your little bunny child about what kinds of things a rabbit needs to live in its den. Gather some simple items or make them, using paper or cardboard and crayons.
Enjoy watching as your child uses these props to play the role of rabbit, and have fun playing along!