Splitcoaststampers puts out a tutorial every week and this treat bag cover was from last week. It's very easy and you could vary the dimensions according to whatever your own treat is. I cut the Real Red card stock at 3 3/8" x 10 1/2" and scored at 4", 4 1/2", 5", and 9". Then just accordion-fold what will be the base of the treat holder and fold the top flap over. Fill your cello bag with your treat, attach with a little SNAIL to the inside, punch some holes for some ribbon to tie through if you want, decorate the front and you are done!
To decorate the front of my Treat Bag I used the I "Heart" Hearts Stamp Set in the Occasions Mini Catalog. If you want to know you are doing some good while you are stamping, purchase this stamp set and Stampin' Up! will donate $2.00 to the American Red Cross for Haitian Relief. Already 6694 stamp sets have been sold as of a couple days ago.