I have 3 boys age 2.5 and 4. Don't particularly get gender specific - but probably more boy biased (compared to what we see at friends houses).
We have lots of tractors and trailors, trainset, duplo, lots of books, ride on cars, jigsaws, doll, soft toys, farm animals, pop up tent. They also like playdoh and painting (if I can stand clearing up the mess !).
At friends house they love playing with a toy kitchen.
Also generally boxes of any kind - prefereably big enough to get into.