I keep an engineer's notebook. Everything
is in it. It is almost always with me. From grocery shopping
lists to electrical
schematics to pretty woman phone
numbers to doodles and cruise logs
entries. I fill one notebook up in about a year. At the end of the year the best pages get copied into the ship's records.
Involving a computer in this would be far to cumbersome for me. Although I do use a iPhone
for notes and pictures when that's an advantage.
As far as where things a stored on the boat: Well searching is a form of entertainment. It does help to be very orderly. Also I go thru every locker, every one, every bag and box, at least once a year checking for roaches, rust and the usefulness of the contents.