I ask for code, and if they have none prepared I ask that they spend at most two hours building something they enjoy.

I expect a decent developer to be able to bootstrap and write most of a fun toy project in a domain they know well or at worst some kata from the Internet within half an hour. Then we spend some time screen sharing and talking about it, similar to pair programming but less problem focused.

If you can't do it you'll likely struggle a lot when working with us because we commonly use throwaway prototypes.