This is the bag that I bought to hold my baby's things for the hospital. It's quite spacious, seems very sturdy and I love the design of it - the shoulder strap makes for easy carrying. Plus it was only £8 from Primark.
Inside: 9 sleepsuits and 9 vests (I packed thinking I'd be staying for 3 days), 3 muslin cloths, 1 fleece blanket, a swaddle pod (£10 from Amazon, I remember stressing out so much about swaddling Emilia in hospital), 2 pairs of socks and a hat.