Karuta fans, now you can find absolutely the koolest karuta can be found at Okuno Karuta-ten Store (at 2-26 Kanda Jimbocho, Chiyoda-ku, in Tokyo as well as many other locations in Japan) or at their online store.
Not just the run-of-the-mill kanji karuta or hakkyuninissu (one hundred poets) karuta either. You can find karuta topics from astronomy to birds to chemistry /culinary / to dinosaur to evolution / Edo / environment to fish / flowers to ghosts to history to Miffy to Kitty to sushi to veggies to zoology cards! You can actually work your way through an alphabetical order of topics or almost. The educational ones can be found at this page. The store also sells puzzles and many other sorts of games, from darts to othello to carrom.
Thanks to Jodie for sending in the info and URL link so that we can all have unlimited karuta fun!!!