Will there be a destination in mind for the flight? (ie. Going to a place or locally). My friend is quite organised. In the few days before flying, he showed me things like:
* draft flight plans - he had a couple of options drafted up incase of weather. He showed me a completed flight plan from a previous trip for comparison.
* flight routes - my friend had the map marked out with distance markers, where to change frequencies, he pointed out places that may be of interest (while we would be in flight) etc.
* Copy of the ERSA (that's the document that shows the runways, AWIS number etc?). He showed which direction we were coming from in relation to the airport/airstrip, but also explained what would happen when landing etc. On the day, I was able to follow the map, marked off as we went past the various markers etc. I even got to call the AWIS numbers to get the reports!
I'm sure your passenger will have lots of fun. Despite the preparations, I was still a bit nervous on the day, but it was definitely the excited type, not the scared type ! :)