What's Good for a Thank You Gift?

I've had my friends ask me at different times what's a good thank you gift?  Well it depends first on the person your buying it for. If they love flowers then buy them a bouquet. If they're crafters buy them a new craft package, or if they love to read buy them that book they've been dying to read. It really comes down to finding out about the person your giving it to and personalizing it to them. Once you do that you just can't go wrong!