The Envelope Punch Board is the greatest way to create a gift card holder.
A few score lines, a bit of adhesive and you have any size envelope you need.
This 3" x 4" envelope is from a 6" x 6" piece of dsp. You can get 4
from a 12" x 12" sheet of dsp.
The stamp set I used is new and has great greetings for any occasion.