I have solved exactly your problem with Pinboard's oft-overlooked tab sets.

When I get overwhelmed by my browser workspaces (Chrome or Safari), I use it to save them all. And then my "new window" setting is to visit my saved tabs (https://pinboard.in/u:username/tabs/) which keeps me motivated to eventually consume them.

I do wish it was better designed for deleting them or moving them to bookmarks or Instapaper. (I also use Instapaper for "things I want to sit and read with focus", which is different problem.)

You can also find browser extensions to re-style it if your aesthetic sensibilities are threatened by it's brutalist design. ;-)