For my elementary school aged boys I used this Free SMJ Jumbo Candy Bar wrapper template. It prints out on an 8.5x11 sheet- and can really be used for anything! My 3rd grader, Noah's teacher loves M&M's, so we wrapped it around a big bag, and it worked out great!
The boys tried to write their name as best they could with my bamboo tablet.
We slipped in a little Target Gift Card (because we all know that school teachers are underpaid!)
and they both loved them.