I used toilet paper rolls, paper towel rolls, and wrapping paper rolls to make the pockets. The paper towel and wrapping paper rolls can be cut long enough to hold an ATC or gift card.
Flatten the tube and mark 1″ from one end and 1/2″ from the other end. For longer paper towel and wrapping paper tubes, I used a length of 5 1/2″ overall. Cut a slit up to the mark on each side of the flattened tube. Fold up to the mark, then remove the flap at each end on one side. Fold up the 1/2″ flap and glue. Decorate as desired. I used acrylic paint for color, then painted with Crafter’s Square metallic acrylic paint from Dollar Tree.
Short process video: https://youtu.be/O380pugAn_8
Papercraft Crystal 