Using an inflated balloon, some string and glue, you can make yourself a hanging string ball ornament for your living space. Simply hang an inflated balloon upside-down from the ceiling, and then cover the hanging balloon with glue covered in string. Allow for the string to dry, and then carefully pop and remove the balloon.
Similarly, you can use an inflated balloon, old magazine pages and glue to make a functional bowl. Cut magazine pages into 1/4 inch strips, roll the strips into tightly wrapped coils, and glue the coils on the surface of a balloon to make a bowl shape. Allow for the glue to set and remove the balloon.
Click on image to enlarge.