Letter writing is a lot of fun. You 'meet' people from all over, learn new things and end up with an interesting pastime. I have several pen pals and I so enjoy getting a handwritten note from someone far away. I keep my more recent ones in a hollowed-out book. These are the ones I've recently responded to or still need to respond to.
I've got a neat little collection of post cards and letters from all kinds of places written on all kinds of stationery. I keep them in a hollowed-out book because, well, it just seems appropriate. I don't know what you're really supposed to keep in a hollowed-out book; probably secret stuff, which I don't have.
I'd love to know who took the time to send this to me all the way from Ireland. If you, my anonymous-postcard-writer-friend-from-Ireland see this; please send me your return address so I can write you back!