Wall end stiffener

To stiffen the wall end, I've fastened a heavy Simpson strap (MST60) to an extra-deep double blocking that's secured four ways. The floor joists are only 2x8 though.

It helps, but there's still some movement. I think I'll have to add something at a right angle to it. I didn't want to do so originally because it would be an obstacle or tripping hazard. Maybe some kind of built-in bookshelf could function double duty.