Nitou was wearing the clothes on his back, had a backpack full of generic camping gear, and, most importantly, his Rider gear. He had the following magical items:

>Beast Driver: belt used to become Kamen Rider Beast using the power of the Chimera inside Nitou
>Mirage Magnum: handgun that also serves as a means of upgrading Beast's power to Hyper Form
>Rings: Rings he uses in order to harness parts of Chimera's power; a complete listing is available on this page. The most important one is the one that lets him transform into Beast in the first place.