Photos in Logbooks
I managed to collect quite a number of different types, airfields and locations (as well as hours) from all over the world flying light aeroplanes. I invested in a CAA Professional Logbook, and invested in a nice leather cover. I then transposed every flight (including gliding and military flights which I wrote up in green ink) since I started my PPL. I pasted in photos taken of first solo, and interesting flights and aeroplanes. I still keep this book up to date, and still include decent photos. Yes, the CAA would be surprised to see it - but in the event of a loss of my normal book it still counts.
Have fun out there!