The SAP Activate methodology for SAP Build Work Zone does not categorize artifacts as "development artifacts" or "non-development artifacts." However, out of the options given:
1. Launchpad plugins - This can be considered a development artifact as it involves creating custom code to extend the functionality of the SAP Build Work Zone launchpad.
2. UI Integration Cards - This can also be considered a development artifact as it involves creating custom code to integrate external data sources into the SAP Build Work Zone user interface.
3. Home pages and C. Workspaces are not typically considered development artifacts as they are usually created using the SAP Build Work Zone visual editor and do not require custom code. However, they may involve some configuration and setup work that could be considered development work.

Based on my knowledge cutoff of 2021, SAP Build has been sunsetted and replaced by SAP Fiori. However, assuming that extensions for SAP Build Work Zone, advanced edition are still available, the three scenarios that could be implemented with these extensions are:
1. Ensure single-sign-on experience for all users
2. Show a list of flights or hotels booked by the user in the corporate travel system
3. Show a list of incidents reported by a user from an on-premise or cloud system