I recently made a little set of notecards for a special girlfriend's birthday. She's a loyal blog visitor, and a writer of lovely notes, so I knew she'd appreciate them. I decided to focus on drawings of edibles, as she's also a wonderful cook.
It was such fun selecting the blank cards and box at my local Paper Source—I could spend hours in that shop! I printed the drawings on my inkjet printer on Canon Matte Photo Paper. (It's a great heavyweight paper, and is reasonably priced, too.) Then, I trimmed them and spray-mounted them onto 5 x 7 notecards (color: "paper bag") and they fit beautifully in a little mailer box (color: "chartreuse"). To make them look more "store-bought", I made a contents label for the back of the box in Adobe Illustrator.
Finally, I cut a vellum band to go around the box, and added a little sticker that I made by printing one of my drawings onto Avery Clear Sticker Paper that I had lying around. (Being a former graphic designer, I love playing with the packaging details.)
While I'm not quite ready to venture into Etsy territory, I definitely had a great time putting this little package together!