Drew

PowerStrip is a WordPress plugin designed to help you manage your WordPress admin dashboard efficiently. It groups non-core WordPress menus into a single PowerStrip menu, reducing clutter and making it easier to navigate through essential admin options.
Key Features:
<ul>
<li>Groups non-core WordPress menus under a single PowerStrip menu.</li>
<li>Customizable settings to choose which menus to hide or show.</li>
<li>Allows toggling between displaying all original menus or only core WordPress menus.</li>
<li>User-friendly settings page for easy customization.</li>
</ul>

PowerStrip

Take charge of your dashboard. Display any admin menu from one location.

Sam Margulies

Ever have one erroneously entered custom field name confuse all of your users and you just can’t figure out how to get rid of it? Delete Custom Fields will let you delete every instance of a custom field from your site. Once your remove a custom field using this plugin it will not appear in your list of custom fields when you edit a post or page.

Delete Custom Fields

Doesn't show all custom fields, though (even if you choose Show Hidden) - would be nice to have them as a list instead of a dropdown, but otherwise it does what it promises.

Works

Remove every instance of a custom field from your site.

PowerStrip vs Delete Custom Fields