I needed a project to use up some of my leftover yarns and picked the Many Cats Square pattern by Pony McTate.
I used mostly worsted weight yarn so I switched between using a G/4.5mm and H/5mm hook, depending on the weight I used and to try to prevent curling. Most of the yarn is Caron Simply Soft, Loops & Threads Impeccable Solids, and Red Heart Super Savers.
My squares came out 6"x6" so I only needed to make 8 squares to get the size I wanted.
More details on my Ravelry page.