Styrofoam ball, cut in half
A jar lid
Lace, rickrack, etc. for decorating
Cut a circle of felt large enough to cover the round part of the Styrofoam ball.
Glue the felt to the ball at the bottom. Glue the ball into the jar lid.
Decorate with lace, rickrack, whatever around the jar lid. You may also want to decorate the ball with a crisscross of ribbon or rickrack. Tuck the ends into the jar lid.
If desired, you can spray paint the jar lid prior to gluing in the covered ball half.