Make a few tweaks to your favourite web pages so they are more usable. Hide annoying alerts, or UX impediments, change the background color of all-white websites, etc.

Stylish

https://chrome.google.com/webstore/detail/stylish/fjnbnpbmkenffdnngjfgmeleoegfcffe/related?hl=en

Hide Drupal's admin menu

https://userstyles.org/styles/135274/drupal-hide-admin-menu

#admin-menu {
    display: none;
}
html body.admin-menu {
    margin-top: 0 !important;
}

Control Freak

another good option that also supports Javascript

https://chrome.google.com/webstore/detail/control-freak/jgnchehlaggacipokckdlbdemfeohdhc?hl=en

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