This cot blanket for India was joined a different way - basically 1dc, ch3. It created a loopy, lacy join.
The rectangles were all the ones I hadn't chosen first because they were a mishmash of colours.
I think each corner was joined a different way as I couldn't decided (or remember) which join was best.
The edge was 1dc, 3ch round twice.
(Don't brush the fleck off your screen - it's in the picture.) Onward and upward!