-Anything by Melissa and Doug, I especially like their wooden food items and their wooden puzzles.
-Games by Gamewright Games. They're great compact little games made out of real materials that actually involve some thought. Barnes and Noble always has a nice selection of them.
-Games by Blue Orange Games, for slightly older kids. Again, all wooden pieces (sometimes in wooden boxes) with wooden game boards. Thought and learning... wonderful!
One way I like to save money is to go to a dollar store and head for their kitchen section. The stuff is usually too cruddy to be used in a real kitchen, but kids like having their own wire whisks, measuring cups, wooden spoons, etc. to play kitchen with. Boys and girls like to play kitchen! It's also nice for when Mommy or Daddy (or Aunt Megan) is trying to cook dinner, the kids can pretend they're cooking their own meal, so they're not underfoot.