What activity can I teach my 2.5 yrs old baby gal.

Hey, 2.5 is so young. Yes, it is as they say, "Catch 'em young," but I feel that we should let the kids be. There is so much of pressure on kids nowadays as they grow big with schools, activities, competition, assignments, etc., that I feel that we should let the kids have "just fun" till the time they do not start the grill or play school and all which continues to go on.