We took a lot of pictures and video clips, and on the flight home from Frankfurt, I used GarageBand on the iPad to create some instrumental soundtrack music for three short "slide show" videos that I later edited with iMovie on the iPad. You can see these videos on YouTube (note: choose HD or 720p in the YouTube settings to view these with full resolution):
Driving video - the whole trip in 2 minutes 20 seconds with fast music.
Europe sights - a bit longer and more relaxed with pseudo-classical music.
Jungfrau "Top of Europe" train ride - a pseudo-Romantic adagio. I was going for majestic to try to match the Alps. Almost 3 minutes.