Undo Close Tab - A very handy add-on, adds a button to quickly undo a closed tab. There is probably a shortcut for that, but I cannot bother remembering

Undo Close Tab - A very handy add-on, adds a button to quickly undo a closed tab. There is probably a shortcut for that, but I cannot bother remembering it. It's Ctrl+Shift+T for those wondering. Works similarly if the last thing you closed was a window.