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.

Luke Dunsmore

A free plugin that lets you easily customize the admin bar and side menu. Change colours, add your own links, hide elements or use drag and drop to reorder them.
SimpleBar gives you:
<ul>
<li>Colours for Admin Bar (front‑end & admin) and the left Admin Menu. Change text, icon, and background/hover/current item colours.</li>
<li>Per‑role controls: hide common core nodes, add custom links with drag & drop order, and optional preferred order of top‑level items.</li>
</ul>
SimpleBar is free and open-source (FOSS) – you can find the GitHub repo here: https://github.com/lukedunsmoto/simplebar-admin-bar-customizer
<h3>Notes</h3>
<ul>
<li>Reordering is best‑effort. WordPress and plugins may add nodes after our hook runs.</li>
</ul>

SimpleBar – Admin Bar Customiser

Customise the Admin Bar and Admin Menu colours. Per‑role: hide core items, add custom links, and reorder (best‑effort).

Admin Bar Disabler vs SimpleBar – Admin Bar Customiser