How should we handle sample files within our application?

We have a Windows desktop application used by engineers with a mix of experience levels. We have several sample files that we ship with the program. We can install them more or less wherever we want.

How should we provide users with a way to find these sample files?

  1. Do we place them in "an obvious location", and hope the users find them? (Where?)
  2. Do we have some hints or mechanism with the program to open sample files (from the File > Open ribbon, perhaps shortcuts to these samples)?

Any other methods?