Usb mass storage would work. Those 'Cruzer' devices are quite cheap nowadays. You could even take a cut out of those to boot. A tour of book shows would be a better outlet for you. And you'd help us all in the longrun.
Maybe an MR sponsorship could be set up to help you.(I'm pushing it there) Of course there would be the regular exchange of procedures. Hey, I've been itching to do the Montréal book show! If floor space was paid for I'd be glad to do it for free! And help any manufacturer promote readers too!
Couldn't you hookup with a device manufacturer?