I'd have thought online storage was the best bet:-
http://www.google.com.hk/search? ... online+file+storage
http://www.box.net/
and quite a few others ...
Anything that's physically in your home is going to be a risk. Thumbdrive can be found. Hidden folders can be found. Locked folders can be found and cracked.
Downside of online storage is it's on someone else's server - may want to keep a backup somewhere.
Upside is plausible deniability: you have access from wherever you want, but if it's ever found you don't know how to access it.
Does it include pics of yourself? If not, it's just another repository of online porno. You could just as well upload it to picasa or somewhere like that and keep it in a private account.