I completely agree Flashlight and Lens Cover Launcher are very handy.
You can set Lens Cover to unlock device on close with this too!

I use shortcutd for locking device on short camera focus.

I don't use FAM, HAM is fine if you only use the Extras repo.
HAM does take an age if Testing and Devel are enabled.
FAM is very good application tho.

I can recommend Pierogi, a lot of good work is going in to that at the moment.

Finally I use CuteExplorer instead of FileBox.