I spent a while making Valentine treats for my kids to take to school. I found the idea HERE and made these a few years ago too. They are super simple to make. In this tutorial, the paper is cut at 4 1/4 by 5 1/2, to get 4 out of a standard 8 1/2 x 11 inch paper. I changed it to 4 x 6 to get more out of a 12 x 12 sheet, and they worked out just fine.
This is what I filled them with... A mix of cinnamon hearts, pink, white and red M&M's and conversation hearts.
Plus some more chocolate of course!
I used the K&Co stack I bought a week or two ago for the containers.
After I was finished assembling and filling them, I punched out the labels for the kids to write on. I punched a 2" scallop circle in red and pink cardstock, and then a 1 3/4" circle in white. I stamped a "To" and "From" and then they got to write the rest and attach them to the boxes.