In a small bowl, combine oats, sprinkles and sugar. Stir to mix.
Divide mixture evenly between clear cello bags.
Fold top of bag over and staple shut. Trim off access bag if you'd like.
Cut out the four printable bag toppers.
Take one bag topper, place tape on the inside and fold it over the bag. You can also staple it to the bag if you want it to be more secure.