While emails may be quick, and gag cards funny, I can't stress enough how important it is to have a set of personalized notecards on hand. Sending a hand-written note on personalized stationery exhibits thoughtfulness and timeless, chic style. Of course, some occasions call for a bit of snark, or a swift reply, but when writing a thank-you note or dropping someone a line, setting a more formal tone is key. Iomoi's Custom Stationery (20/$68-200/$43 includes personalized flat cards and coordinating envelopes that are cute, smart, and classic, not to mention substantial in heavyweight paper. You can choose from a variety of designs, ranging from a simple monogram to an eccentric fox in a smoking jacket, or others tailored to the bride-to-be, the new mom, or the dog lover. Personally, I get a kick out of this top-hatted seahorse, which my friend aptly described as "a Mr. Peanut of the sea."