I recently did the same thing and have packaged it all up as an Ansible setup script [1]. We're using it for a Pi based robot arm [2], so having a built-in access point and a web interface to use for configuring the WiFi means you don't need to rely on the user plugging in any peripherals. Works well!

Incidentally, the framework (headlessPi [3]) we use to run "apps" in the browser and configure the system is all open source and easy to configure for your own use.

[1] https://github.com/headlessPi/headlessPi-setup [2] https://mime.co.uk/products/mearm-pi/ [3] https://github.com/headlessPi/headlessPi