One click stashes every open tab and hands back the memory.
Weeks later, type a phrase you remember reading and the page comes back.
Hit Ctrl+Shift+S and every open tab is saved and closed. No popup, no hands off the keyboard.
One click reopens every tab in a group exactly as you left it. Or click a single tab to take just that one.
Pin Stash to the toolbar once and it's always a click away, right where the tab pile builds up.