On the Rewards app on console there is the weekly 100 point treasure. There's also the multiple 5 point 'check this game out' and the occasional 10 point poll you get below the that and weekly set you've mentioned.
womble9 posted just up this page a link to Reddit (copied below) for two fitness videos a day for another daily 40 points.
A couple of months ago someone posted about the Bing home page on PC (choduk, August 10th). If you go to the Gaming tab on a Bing home page there will be a task worth 10, 30 or 50 points. You just have to click it to get it done.
Even without GamePass I'm on for over 200,000 this year which is just as well as I just spent over 500,000 on a Series X last week.