Smiley Happy Face Incentive Stickers 3/8 inch Diameter. Value Pack of 1320 Count By School Smarts Save Big Discounts are in the special offers section of the page. Mini Multi-Colored Smiley Face Stickers. Stickers have multi-uses including as a reward or incentive for good behavior and or great effort. Happy Face Stickers can be used by teachers and parents to acknowledge a job well done. These mini achievement stickers pack a big punch and can really help to improve a child's self esteem. Teachers use these small stickers in the classroom for assignments and academic tasks. Parents can use these reward stickers for the same or for household things like chores. 1320 Mega Pack of Happy Face Stickers are ACID FREE Each small sticker is approximately 3/8 inch in diameter