See My photo website... I've posted some pics of my wall there. It features two maps (US and int'l) with pushpins of where I've been, and is surrounded by the boarding passes and interesting tags (premium bags, transfer tags, etc) from my journeys.

Yes I am so particular/organized/retentive that the boarding passes are organized. The US passes are in alphabetical order by city, and only one per city per carrier.
The international ones are organized by carrier.