I made some gift boxes to pack some small shortbread cookies from Christmas cards.
You will need:-
A greeting card
Scissors possibly something to score the card with if you don't want to use the scissors.
A pencil, or something to mark with
A glue stick, or other non-toxic glue
Step 1: Separate the Front, and Back of the Card.
This may be easier done with a long knife blade, but you just need the card front, and back to be separated.
Step 2: Measure What Will Be the Side of the Box.
What I was packing was a double layer of shortbread cookies, so I measured 1" (25mm) in from the sides, on all sides of the front, and back pieces of the card. I used pencil to mark the measurements because it made it easier to see. On my other boxes I just scored with the edge of my scissors, but it didn't show up well on the picture.
Step 3: Score, and Fold the Sides Up on the Box Halves.
I used the dull side of the blade from the scissors to score the straight lines, but use whatever is hard, and pointed to score the lines. Fold the sides up so that the inside of the card faces up, and the glossy side will be the outside.
Step 4: Cut Tabs for Gluing, and Glue the Box Together.
Erase the pencil marks/lines.
I found the best way to glue the box together was to cut along the folds that meet the short sides. I glued the porous side of the tabs for better coverage. If you glue the glossy side, the glue doesn't take as well. Fold the tabs in, and apply pressure for a few minutes until the joint holds.
Step 5: Test for Fit
My card was slightly smaller on the back. I guess most greeting cards are, but it seems that the card stock of these cards is negligible that I didn't have to measure the sides to make the bottom half smaller. If I was using less-forgiving cardstock, I might make sure that the bottom was smaller that the top. Either way, test the fit to make sure it closes, and is snug.
Step 6: Fill the Box, and Deliver. (Shortbread Recipe)
These shortbread cookies are basic Scottish shortbread made to a basic 1,2,4 shortbread recipe (1 measure sugar, 2 measures butter, 4 measures all purpose flour) with a pinch of salt. mix all the ingredients, chill, roll to ½" (13mm) think, cut, and bake at 300°f (about 150°c) for 25 minutes, or until golden around the edges. My cookies are 1"x1" and I put 12 in a box.
I chilled mine in the freezer for the 5 minutes it took for the oven to preheat.
My cookies were to be delivered immediately, but if you're going to be holding on to them for a short while, I'd suggest a wax-paper liner in the box. Shortbread has a tendency (due to the butter content) to lose grease as it sets for the first few hours.