By strange coincidence, I just noticed earlier today that (I think I'm right on this) the disc wallets which LoveFilm use to send DVDs through the post are made from Tyvek. Useful stuff!

Anyway, I clicked through because on a related note, I've been receiving these Tube Map diaries as gifts for the past two Christmasses. Beautiful and useful - it's far easier to yank this out of my handbag than to call up an app. or rummage around for a paper map! As I'm an amateur graphic designer too, I love the fact the Tube style carries on throughout the diary, also to a set of cute stickers which you can attach to the month-per-view pages - including rows of an altered Underground logo, reading either "London" or "Hold Tight". It does feel nice having my trips to the capital marked by a London Underground sticker...

This gets me to considering a completely cartographic bag. I wonder just how many corners of the world one could fit into something like this (starting with keychains, naturally):