Recently, while preparing for my upcoming craft fair, I’ve figured out a way to make a wide variety of useful rectangular boxes out of regular 8.5″ x 11″ sheets of cardstock or paper.
Knowing how to do this can come in handy for any seller of small arts and crafts, providing a cheaper and more personalized way to package your goods than store-bought boxes.
Start with an ordinary sheet of paper or cardstock, any color. (For smaller boxes, you can split a sheet of paper in half and use the resulting 8.5″ x 5.5″ sheets. Any square or rectangular piece of paper works.)
Decide how wide you want the box to be. Fold up the sides accordingly.
Fold each corner in, lined up with the folded edges.
Fold the ends of the paper in, as shown; then unfold.
Then fold the sides in, as shown, followed by the ends.
Now unfold the whole thing. You’ve created the creases that will allow you to complete the project.
Refold the square on each corner so that it points inward.
Now comes the slightly tricky part. Fold the corners in, inverting them so that the top edges of the paper walls touch the inner bottom. The box’s walls are half as tall as they originally were, but they are now held in place.
To make the box lid, take a second sheet of paper and fold the edges as before, allowing slightly more space in the middle than the first one.
Follow all the previous instructions for the second box that will form the lid.
The lid now fits on top of the box, and the box can now be lined with tissue and filled with your handmade jewelry or other trinkets.
You can make several different box sizes using this basic formula; just adjust how far you fold the sides in the first step.