- Water Chestnuts
This fruit has many spikes covering the skin and the samurai used the spikes as maki-bishi (caltrop). The ninja used to carry a handful of makibishi and drop them when they are chased in a narrow path so that the pursuers can step on them and hurt themselves.
- Bamboo Leaves
These leaves have an antibacterial effect so the ninja used them to preserve their food especially rice. After boiling the rice they wrapped them in these leaves.
- Red Bean Paste
Since it is difficult to hunt animals in certain seasons and buddhists tend to refrain eating meat, the ninja had to find ways to keep them going. The beans have lots of protein and the ninja boiled them and made dried bean pastes that can be eaten on the go.