I searched the thread, honest ... I found out that a 17" laptop might fit if it was the only thing.
So ... how about a 15.6" laptop? I got a good deal on Black Friday.

I might not even need to keep my extra photo cards if I could bring my laptop.
Also I read somewhere today that internet access is $10/day. Seems a bit like nickle and diming to me, given that wifi hot spots are everywhere. Are there any hot spots around "the world" or can I use a "public" computer somewhere in the Contemporary to check email?
It is a drop in the bucket, but I'm not thinking I will spend anything like $10/day worth, even at WDW prices.