Little black book. Lock it in a drawer or home safe when not needed. It amuses me that people actually take up the offer of on-line services to store their passwords...sort of defeats the object! I know just one computer security expert. He is more paranoid than I am and keeps a hand written book plus employs data encryption for an additional off-board flash drive password storage which he keeps separately. His advice was never to store such things onto your hard drive or to use a 3rd party on-line encryption service password storage service (many are offered these days with premium home PC security packages).
The beauty about actually using your organic digits, a pen and paper, is that you can see at a glance your passwords, easily scribble and update as required and when a page gets too scribbled on, tear offending page out, burn or shred it and write another!
