I was happy with past self for neatly organizing all of the strip sets into the groups for blocks rather than just shoving them all out of sight. That meant I could easily lay everything out and start stacking pieces for - you guessed it - chain piecing! I had already finished the task of sewing the individual strips together and slicing them crosswise. That's quite a bit of the work, actually, so all I need to do now is match and sew these into the final granny square blocks. Here's one I tested out before the hiatus:
I really enjoy patterns that take simple shapes and turn them into more complicated blocks in creative ways. These all started out just from long strips of fabric; I didn't have to sew all those little squares together! Sadly, there is no way to shortcut trimming and squaring up blocks. There will be a lot of that to do once I get the rest of these blocks done.