I got my baby so much stuff because I kept finding good deals on Amazon (like 75% off and free shipping). So I sorta went crazy. Here's a couple of things that I came across that I didn't really think of before I started shopping.
Blocks shape sorter
Hammer and peg set
Popcorn popper push toy
Good luck, there's a lot of stuff out there, and I think you never know what your baby is going to like until you buy it. I've bought tons of toys, but my baby prefers empty water bottles.