Since you ask, here's a couple of pix of the afghan now keeping my feet warm. It's wool, donated by friends, which I worked on a long time ago.
I knitted the squares in whatever design I felt like, done diagonally. Then I spent ages pushing them about the floor, to Handsome Partner's amusement, to get the design working. Then I joined them with crochet, ending with an outer border in a dark green which works pretty well.
It was very warm, good for him on cooler days when we spent time on the deck, which he loved. I also knitted a cotton one, same approach, for warmer weather. I gave that one away quite a while ago.
So this one's still doing fine. The cats used to like getting on it, too. I expect they thought it was theirs.