Robots are appropriate for any occasion. They are neutral but friendly so you can use this card for birthdays, get well soon, congratulations on your new baby, good luck on your exams, anything!
Penguins are very organized. They'll have your files in tip top shape in no time.
Available at: Papire http://papire.tumblr.com/post/490921155/animal-index-markers-designs-bear-dog ($1.80)
What message are you trying to send? Just tell the sock monkeys and they'll take care of it for you.
Look at you guys writing adorable letters to each other, I'm so proud of you! Keep corresponding and keep sending me pictures! I especially love that polka-dotted envelope, so cute!