Mac: System Preferences has become a little crowded over the years, hasn't it? If you're having trouble navigating the overflowing menu when you need to, you can actually hide some of your lesser-used icons.
Just open System Preferences and head to View > Customize. You can then uncheck any icons you don't want to see -- which is especially handy for that bottom row, which can get cluttered with stuff you never visit. And if you ever need one of them back, just return to View > Customize to revive it. This option has been around for a while, but somehow we've never featured it, so we thought it was worth a mention!
How to Hide Preference Pane Icons in Mac OS X [Make Tech Easier]