I have a very similar girl (26 mo too!).
We:
-Go to the Science museum (Museum of Nature and Science) at least once a week. She is very into space/astronauts/planets ect. and the people on staff there are wonderful and actually take the time to talk to her and answer her questions. They also don't seem to cut her off by age and will include her completely in any activities or presentations they are running in the Space area.
-Have older friends over (ideal fun ages seem to be 3 or 4). This can be a great break for you too as they play together without needed help.
-We read Magic Treehouse (I know its for older kids but I find she is really into it and asks for them) just a few chapters at a time then she wants to act it out.
-Like SUNDAY DRIVER said, we love playdough. I make it with her, letting her pour and mix, and add the color, then I cook it over the oven. We get small items she can stick in it then I just let her play
-I get two bowls of water and let her pour back and fourth and wash things
-We go to a class at the Botanic garden's once a week
-Beading is starting to be a big hit.
-She likes to trace things
-She likes to play with a Melissa and Doug wooden barn and horses and the Plan Toys doll house and dolls
Will write more later but I have to run an errand!
