Definitely keep food and clothes and shoes in the office. I have a small chest with my clothes, a drawer full of food, and a shoe rack under my desk. Resock on days you drive. Any bike can be a commuter.
I don’t have advice about the laptop. I VPN into my work laptop from my personal laptop when working out of the office. I do have a small backpack in case I ever need to bring it with me. So far, I haven’t used it.