I found this idea here last year and Mickey did the option without the crayon but this year Mary Beth wanted to do them and make the crayons for them. I thought it was perfect for little kindergartners and a great substitute for a sugar-y treat. We made the crayons the same way as last year-- I posted about it here.
Mary Beth also took the time to draw and color individual pictures on each kid's envelope- all according to what she thought they loved. I wish I had gotten a picture of that!