Create a reusable settings page in Google Sheets, using Apps Script, where configurations are easily accessible, even to those without a coding background.
I’ve not seen the numbers but would imagine the majority of Google Apps Script projects are script bound to Google Sheets. Google Sheets provide a useful data canvas which is familiar to users, which can also be used to quickly interface your script solutions. You could of course use dialogs and sidebars combined with the Properties Service to collect and store settings, but coding these in HTML/JavaScript can be time consuming.
This post from Dimitris Paxinos includes a nice Apps Script code pattern for getting and setting user settings from a Google Sheets tab. This includes some nice features including in memory storage and methods to use Script Properties. The post includes an accompanying video which explains the code should you need additional help understanding this solution.
Source: Creating a Settings Section in Google Sheets Apps Script Projects
Member of Google Developers Experts Program for Google Workspace (Google Apps Script) and interested in supporting Google Workspace Devs.