To make a standard 3.5 x 2" business card holder, start with a 8.5" square of paper. For a standard gift card, use a 9" square.
Start by placing the paper pattern side down. Fold the paper vertically and open back up.
Fold both left and right sides to meet the middle fold.
Open the paper again. Fold each corner inward so that the corner points meet the nearest crease.
Close the left and right sides back in again, keeping the corners tucked in.
Turn the paper over and fold the top down so that the exposed diagonal edges meet precisely at the fold.
Fold the bottom up in the same way, this time, tucking the bottom edge into the diagonal opening. They should overlap slightly letting you do this.
Make sure your card fits, then fold in half. Origami business card/ gift card holder DONE!
Let us know what your DIY outcomes look like!