Ask your children to collect loose parts from nature. It can be anything such as stones, leaves, sticks , pinecones etc.
Cut a recycled cardboard into a shape of a human. If you have a big cardboard box, you can ask your child to lay down and then you can trace an outline of your child and then cut it out.
Let your child decorate the cardboard with the loose parts . What ways can you dress up the body with Loose Parts?