My daughter is 2.5. Right now, she loves her Little People Disney Princess Castle. http://www.amazon.com/Fisher-Price-Little-People-Disney-P...
She got it for xmas and still plays with it daily. Of course, I was a sucker and bought the extra princesses (it comes with Cinderella and Snow White), but you don't have to.
She also really likes the Color Wonder Markers from Crayola. I don't let her use regular markers because she'll draw on anything, but the Color Wonder ones only show up on the special Color Wonder paper. You can buy a set that comes with markers and a coloring book, or you can buy a pack of just the markers and a separate pack of blank paper.
She LOVES books. Some of her favorites are Pinkalicious, Fancy Nancy, Ladybug Girl, Camilla the Cupcake Fairy Tea Party (and other books by the same author - Lola the Lollipop Fairy, etc)
She likes blocks and Lego duplos.
She also loves her play kitchen and all of the accessories - food, plates, etc - that come with it. She's a big fan of her Fisher Price picnic basket too. http://www.amazon.com/LeapFrog-Shapes-Sharing-Picnic-Bask...
Finally, if you want something educational that she can learn from, check out Discovery Toys (www.discoverytoys.com). It's a home based company with amazing products. I am a consultant, but haven't been working much so I don't have an active website. If you saw something you liked, you could PM me. Or, you could just order through the main DT site.