So Monday of last week I had a job interview at a dog grooming salon as a receptionist. I meant to send a thank you card or letter the next day but being human time slipped away and I didn't get the chance. I called on Wednesday (they were closed Monday for Labor Day and are always closed Tuesdays) and talked to them-and was told they had a few more interviews to do and I could feel free to call back next Wednesday.
My question is, is it too late to send something? and if not-When I went in for the interview it was pretty informal and was told that while they are professional and formal with clients they like to have fun. So would using some sort of dog stationary be really lame or should I stick with a more formal regular white paper?