You need:
Glue buttons on sweats. That's it!
Thanks to Kati for this very fun idea!
Another Idea
Cute as a Button
From cardboard, cut out two circles and colour or paint one side of each. Draw 4 smaller circles on them as well.
Cut holes in a garbage bag (for head and arms). Glue the circles to the bag. Cut out a "needle" shape from cardboard and glue it to the back button, sticking out a bit.
Thread some yarn (braid 3 strands together to make it look bigger) through the needle and around to the front of the button. Glue it in place over a button hole.
Cute as a button!
Thanks to Heather for this addition! Very cute!