No toolkit would be complete without a registry cleaner.
RegSeeker by Hover desk. (As far as I am concerned this is the only registry cleaner to use.) "ever"
Check out their Hover desk, and Freeware tools.
There is no magic bullet for Cleaning the registry because your setup may very from others ; requiring a list of ignored key entries
to match your current setup. But with a little patience you can soon build a list to match those registry keys that may otherwise get
mistakenly removed.