I've been checking through my article
Astronomy Presents - for Kids to make sure it's up-to-date.
I can say that since the last up date John Williams's Hubble Star Cards have won another award and been mentioned in the NBC News Science page's Geek Gift Guide. Educators and gift-buyers, here is the
Hubble Star Cards site. If you decide to buy, enter THANKS as a coupon code and you can get 15% off.
If you have anything to recommend, let me know.