Right now you can get a $3 Credit on Snapily. This site features 3D cards with the ability to put 2 images on the same face of the card, so that it alternates as you turn it. Very cool- and they remind me of the old lenticular rings and post cards they used to make. You can personalize your cards to make them even more special too. You can use this credit on anything offered on their site though.
Once you sign up with Snapily you will receive a unique coupon code that you can use right away at checkout to get $3 off your order. Their products start at $2.99, so you can end up just paying shipping depending on what you order. Just go HERE to sign up and get your credit and check out their products.