You may not choose to buy a fancy playset, but you can throw a blanket over a table to make a hideaway. The first thing parents can do, is help their children explore and discover various talents. Notice the things your child likes. Comment on them. Loving parents can be very helpful social mirrors by giving specific, positive feedback to their children.
Most children are interested in or collect certain things.
If your child loves insects, help him or her collect them. Get books about them from the library. Buy an ant colony. Go on bug safaris together. Ask your child to tell you what he or she has learned.