I've packed my books (though not anything else, as M. is still sleeping in the bedroom and doesn't have to wake up and work for another few minutes, and I don't want to slam drawers and rattle closet drawers to wake him; I prefer to do that by poking him repeatedly). It's not many -- short trip -- but it's clearly the relaxing trip mode of book packing, that is, books I would like to read but just haven't been reaching for when I have other options. When it's going to be a moderately stressful trip, I pack things I've been saving for special; when it's going to be a really stressful trip, I pack things I already know I love, so I don't have to deal with bad books on top of everything else. But for a routine, no-problems-expected trip, I pack things that get shuffled to the bottom of the pile for no good reason.
I'm also funny about packing other people's books. I don't really intend to be going much of anywhere but my own car, my parents' house, and my own car again, but for some reason I still don't want to pack bunches of porphyrin's and dd_b's books. The "it's not mine" urge doesn't kick in when I have a book in my purse to read in line at the grocery store, but somehow going to a different state changes things in my head.
How do you pick which books to pack?
(Special to Aet: thank you for the postcard and leaflet! I enjoyed the mammoth under the mushroom, but when I tried to e-mail you, the message bounced.)