As a general rule, if the printable thank you card is to be folded once after printing, cardstock will work best. If it’s to be folded more than once, regular computer paper is your best choice. Anytime Thank You Cards from B. Nute Productions You can get a similar look to the photo here by printing your cards out on Kraft cardstock. Simple Thank You Card from Rebekah Disch Chrysanthemum Thank You Cards from I Should Be Mopping the Floor Hey Thanks from How About Orange Fill In the Blank Thank You Notes for Kids from Wit & Wander Polka Dot Thank You Cards from Living Locurto Many Thanks from Hey Susy