If you’re not careful when using Safari, you could end up with a screen full of open website windows. Safari’s default behavior when opening a new link is to do so in a new window. This drove me nuts until I figured out I could just Control-click any links and they’d appear nicely in a new tab instead of a new window.
On the occasions I forget that feature and end up with a ton of open windows, there’s always the “Merge All Windows” menu command in the Window menu. It’s a slick piece of kit, but I’d like to trigger it with a keyboard combination. Here’s how.