Regarding what I said a couple of days ago, on there not being chair modifications of yoga lunges. Some quick searching has turned up a couple of videos, though sadly, the sound is not so great.
The kneeling version:
[Kira Ryder instructing for Lulu Bandha's yoga studio. Video via YouTube.]
My knees are kind of side-eying that block and might want to use a pillow instead, but that’s maybe just my knees, who have been finicky lately.
The standing version:
[Julie Downey instructing. Video via YouTube.]
While the twist shown would increase the hip flexor stretch, it is a completely optional element.