What gift do you give a knitter?

Knitting is a hobby that creates a lot of gifts... but what on earth do you give to a knitter as a gift? I have recently written a few articles with suggestions on what to give to a knitter for the holidays:

• Gifts for Knitters - I wrote this article about different gifts to give to knitters.
  
• Give the Gift of Knitting Books - This article recommends a number of different knitting books that any knitter would be happy to have.
• Vintage Knitting Patterns - These make great gifts as a source of patterns, but also as something to hang on the wall of a craft room.
• Learn to Knit Kits - What you should give to someone who is just learning how to knit.

Hopefully these articles will give you SOME idea what to do for your favorite knitter (or me if I'm on your list!) If you have any other gift suggestions I would be happy to incorporate them into these lists.