Seuss Inspirational sites:

eSeuss - the best online Seuss site since SeussNavy.com went offline.

SeussVille (at Random House)  - the book publisher.

Seuss.org - another Seuss site

eBay - what I can I say, if it exists, they buy and sell it at eBay. In case you aren't familiar with eBay, it is a HUGE online auction. The key to getting nice things for your baby/child's room is to be patient; if there is an item for auction, there will surely be more just like it - if there is only one of them (or maybe very few), it will probably sell for more than you are willing to spend on a baby room item. Don't overbid! I tried to stay in the $5-$15 range (plus shipping). There were a few items that I spent more on. For example, there was a "Cat in the Hat" cookie jar I paid $30 for. And some of the larger, less common "Cat in the Hat" stuffed animals were in the $20-$30 range, and the night lights were $20 each. I always try to find items that are not in their boxes (since boxed items usually sell for much more), or with slight damage (small tears, or light wear). Be sure to search for common misspellings of words (like Suess) and search for things like "cat in the hat". Some of the best bargains I got were when the seller misspelled the subject or left out the word "Seuss". This is also a great place to get all of your Dr. Seuss books (if you haven't gotten them already) - you can usually get them for just a couple bucks each (if you don't mind them a little pre-loved).

FunToCollect.com - lots of Seuss stuff here! I'd start here first.

  The Seuss Store - this guy has a lot of other sites consolidated on his site. 

 Universal Studios Islands of Adventure "Seuss Landing" in Orlando Florida. This place has some serious merchandise. From pencil erasers and stuffed toys, to children's sleepwear and earrings. Of course you have to go into the park to buy the stuff - but hey, you probably need a vacation anyway, right?

 Hallmark - some of the bigger "Gold Crown" stores carried a few Dr. Seuss items. These are mainly "collectable" type items, and are $10-$30 each.

 Baby Heirlooms - this place has a lot of nice Seuss things, and a few other accessories.

 Tickles - a few nice little things

If there is any other information you think I should put here, let me know.