I've been playing around in my studio lately trying to come up with this year's treat boxes for my craft fairs. Every year I sell out of these treat boxes as they make great gifts for teachers, bus drivers and coaches. I design them so a gift card fits nicely into the box as well as some candy or chocolate. I was trying to find a milk carton design for this year but couldn't find one that would work for me. I felt a little like Goldilocks as 1 was too small, another was just a little too big but also required a 12 X 12 piece of cardstock, which cut into my color choices. Turns out I was going to have to do some math and come up with my own size. HERE'S WHAT I CAME UP WITH!
Treat Box Instructions
Here's what you'll need:

1. On the long side of your cardstock score at 2 1/2, 5, 7 1/2, and 10 inches.
Score short side at 2 1/2, 5 and 7 inches.
2. Trim as shown being careful to keep the 3/4" seam at the top of the cardstock.
Cut along bottom score lines on 10 1/2 " side.
3. Burnish all score lines.
4. Find mid point of 2nd and 4th 3/4" blocks and score down to 1st score line. From that point on the score line score additional lines diagonally to 2nd score line, creating a scored triangle as shown.
5. Use Tear & Tape or another adhesive to attach sides together to form box.
6. Glue 4 DSP pieces to center blocks and the 2 smaller DSP to blocks without scored triangles.
7. Fold in the 4 bottom panels and glue the bottom in place. (I glued all 4 panels to each other as I folded.
8. Sit box on it's bottom and fold in the top of the carton pushing into the triangles to create milk carton shape.
9. With top closed mark 2 spots for ribbon placement. Create holes with Crop A Dial or other hole punch.
10. Thread ribbon through holes and tie.
11. Attach scalloped circles or other embellishments to finish box.

Finished! Don't forget the candy!