A ribbed square......

This is another twist on a classic square:

It is essentially the same pattern as day 7, but rather than working ordinary treble crochets on each round I alternated front post treble crochets and back post treble crochets. In each corner space I added two treble crochets, two chains, two treble crochets. I then finished it off with a round of double crochets to give a neat edge.

One really good thing about this square is that it looks the same on both sides.