What to knit for a summer baby boy?

So we are having a baby boy in June - woohoo! But im really struggling with what to knit for him, im thinking a cute jumper but cant find many patterns I love, does anyone have any faves?

Have a look at the little rascals e-book on Rav - they can all be done with short sleeves, as can a puerperium cardy or anything from the button lovers e-book
Or a Benedick & Beatrice vest?

Thanks, i love the button lovers ebook patterns

I love the gift wrap cardigan. It can be done short sleeved.