This was a case of a box I got from my upline Tami. We made this at my Stampin' Party this month. We used 2013-2015 In color DSP cut into quarters to 6x6 pieces of squares.
We used the Envelope punch board punched and scored at 2" and 4" on all 4 sides as shown and then use the scoring tool to score the flaps at 3" down to the base of the cards then fold up the sides to make the box as shown below.
This is the original box I cased for one of my projects this month- super cute!