Great inspiration for making cards

This is an American store which I think looks really classy:
Impress Rubber Stamps
http://www.impressrubberstamps.com/
Check out "Impressive Ideas"
Archive of Christmas card ideas

Some inspiring cardmaking blogs:

Kathy B’s blog

Jo Kill’s blog

Daring cardmakers’ challenge blog

Colour picker

Here's an interesting widget that helps you pick co-ordinating colours - useful if designing webpages, but also good for colours of any kind!

And of course - brilliant for helping you work out the colour palette for a scrapbook page!

Only works in Firefox, I'm afraid. If you have Internet Explorer, you won't be able to see it properly.