You probably won't be surprised when I tell you that I don't think there's any such thing has having too many cards – particularly when it comes to thank you cards.  These letterpress cards from Fugu Fugu Press would be perfect for saying "thank you" to a friend for having you over for dinner:

Plus, how can you resist that happy little fork?  So cute!  

On the other end of the spectrum, and in case you know someone who needs some consoling, consider this darling little card:

Both from Fugu Fugu Press.

{image credits: Fugu Fugu Press}