Last night I was playing with yarn and worked up these gift card holders. I cannot claim the idea as my own. I saw the knitted card-igans, as they are called, on the simplynotable.com website and thought they were just tooooo cute. My samples are done in crochet not knit, but the general idea is the same.
I haven't written up any instructions yet because I'm still in the exploring stage and trying various stitch patterns and yarn weights. The yarn on the left is a sock weight yarn, the other three are a worsted weight acrylic.
So far I'm liking the card holders with the texture created by the front and back posts double crochet stitches.