My twins love plain zip up hoodies, no patterned fabric, no crazy colours. Grey sweatshirt fabric can be hard to find at my local Spotlight, but I managed to walk in there last year when they were unpacking new bolts so I grabbed a few metres. They did agree to coloured zips so they can tell which hoodie belongs to them.
I used a pattern in Ottobre 4 /2010. I didn't line the hood and altered the shape of the .pocket to eliminate the gathers and binding.
Grace gave it the thumbs up so I'm sure I will be making more.