I’m the happiest girl in the world when I receive quality snail-mail. You know, postcards, thank you cards, invitations, etc. (It’s the little things.) But, can you imagine opening up your mailbox to a slice of “cake” that doubles as a postcard?! SheKnows contributing DIY expert Sandra Denneler shares this creative version of a greeting card perfect for any occasion. It’s not edible, but it will certainly put a smile on a loved one’s face, that’s for sure.