Toys = I need a bigger house

The girls are getting so bored with the toys that they have.  They have been playing with many of the same ones for at least 6 months.  I have added a couple of things over the summer, but nothing major.  I feel bad for them.  But, I have no idea what toys to get them.  The other issue is that I have a small house with limited space for toys while still allowing room for the girls to run around. Since Christmas is approaching fast, I don't want to go out and buy toys now.  But, I have been trying to do a lot of thinking about what toys to ask for them. 

At daycare, they love playing with the baby dolls and little doll strollers.  Recently, they wrapped the babies in blankets, told them "ni-ni" and put them to bed.  I think they would also enjoy a toy kitchen, but it needs to be a narrow one to fit against the wall in a small space.

Help!  I need lots of suggestions for small, but fun, toys for two year olds.  I say two because their birthday is shortly after Christmas.  

Let's see, what else do they like.  They love talking on the phone.  They love books.  Puzzles are so-so at this point.  They really just enjoy dumping all the pieces off.