ioannup

The plugin automatically hides unused Admin Menu items and adds search box for menu items
If you use a lot of plugins – each of them adds their own admin menu item. The admin menu grows more and more. And though you don’t use the majority of menu items, they bother you to find the certain menu item. 
This small plugin solves this issue AUTOMATICALLY. It means you don’t need to enable or disable some menu items manually. If you use a menu item it is on the menu if you don’t use it a certain time (which you can set in the settings) – it will be hidden but you’ll have access to them anyway.
<h3>Plugin Features</h3>
<ul>
<li>Search menu and submenu items</li>
<li>Auto hides unused Admin Menu items</li>
<li>These settings personal for each user</li>
<li>Reset settings</li>
<li>Reset clicks – to start collecting data and hiding unused menu items from scratch</li>
<li>Set Menu Items which should be always shown or hidden</li>
</ul>

Useful Admin Menu

The plugin automatically hides unused Admin Menu items and adds search box for menu items

Scott Kingsley Clark

Pretty easy setup.. just install and activate it on the site of your choice (or network activate) and set up the settings however you’d like.
This plugin supports both Per-Site and Per-Network (WordPress Multisite) settings, so you can fine tune your options based on your needs.
Other plugins you might be interested in:
<ul>
<li>Showing the Admin Bar in more cases – <a href="https://wordpress.org/plugins/always-show-admin-bar/" rel="ugc">Always Show Admin Bar plugin</a></li>
<li>Showing the Admin Bar to logged out users – <a href="https://wordpress.org/plugins/logged-out-admin-bar/" rel="ugc">Logged Out Admin Bar plugin</a></li>
<li>Customizing the Admin area based on role – <a href="https://wordpress.org/plugins/adminimize/" rel="ugc">Adminimize</a></li>
</ul>

Admin Bar Disabler

Pretty easy setup.. just install and activate it on the site of your choice (or network activate) and set up the settings however you'd like.

Useful Admin Menu vs Admin Bar Disabler