I haven't purchased from this site yet, but my sister-in-law has it marked as one of her favorites.
MamaBargains.com is a site that sells just one baby or kid item at a time. They get excellent deals from vendors and every item is 50%-80% off the retail price. Each item is very unique (meaning you won't just find it at Walmart). I have seen really cool convertible high chairs, and other baby items for really inexpensive prices. Their site says that they gear items for kids 10 and under.
Check it out every week or so to see if there is a deal waiting for you. This is a great place to get yourself stuff as well as gifts for others.