Okay. Work is freaking me out right now. Let's think knitting and nieces in no particular order.
Niece one: Amelia. Sweater from crocus-colored cotton. Super-soft. 1 year old.
Niece two: Selah. Blanket? Hat? Jumper? She's almost 3.
Niece three: Tikvah. Blanket, crib-sized? Whatever it is, make it washable! She's a drooler. 1 year old. Yeah, blanket for sure.
Niece four: Liora. Maybe the Apple 2E style hat? She has a cube-shaped head. Maybe ... a soft merino wool hat? Or a superfast lacy baby cardigan? She's about 6 months.