A handy wireless keyboard is mentioned in https://github.com/ee292d/labs/blob/main/lab0/README.md#connecting-the-display-and-keyboard.
The default Debian keyboard layout English (UK) in RPi OS causes errors with some character on the Reniie keyboard. One example is tilde ~ on the F12 key is displayed as a different character. Changing the keyboard layout to English (US) resolved this issue.