I made these Valentine's day cards with a small red inkpad and homemade stencils (using a heart-shaped hole-punch). They are quick and easy to make but look rather classy. However, they're also messy. (Scratch paper covering the desk, frequent fingertip-washing, and paperclips help somewhat.)
For the following card, I sprinkled the rest of the stencils on a glue-covered piece of cardstock and smudged them (first picture), and then wrapped the card in somewhat sparkly plastic (second picture). By the way, it is very difficult to write with a metallic pen on glue, even when the glue is dry.