Halba @ Fenugreek seed. I used this in my assam fish. Some people use this in Nasi Lemak and Nasi Dagang.
Buah pelaga @ green cardamon. Can give you diarrhea if consumed, or so said some people. I've never tested that theory though.
Kayu manis @ cinnamon. Also has a nice smell. Ikea sold candles of apple and cinnamon, if anyone is interested.