Concertina style inside, ATC envelopes attached to each other at the base and affixed to the cover of the folder.
Here's a coupon folder that I made for my husband as part of his birthday gift. I made little coupons for him for things such as giving him a lift to work, cooking his favourite dinner, silly little things that made him smile. He always finds his birthday a hard time but I always do my best to make it extra special with little things like this. I can see myself making more of these because it was so easy to make and can be done for any occasion really. Of course I bought him a proper gift too as you'll know from my next post.