DIY Graduation Cap Favor Box | Party Ideas & Activities by ...
13-04-2016· The treat boxes are 2 ½" square, so cut the poster board into 3 ½" squares. Use a ruler to find center and mark it. Glue tops to boxes making sure the center mark is visible. Poke thumb tack into the center mark. This hole will make inserting the brad easier. Capture the key ring between the brad's prongs then push brad through hole.