From my experience, of having kids...I usually go for bath stuff ( towel, washcloth, baby body wash and shampoo and bath books/toys) or a bamboo/silicone eating set ( bowl, cup, plate, cutlery, a bib) for new babies. Maybe some board books the baby doesn’t have yet? Hema do a great range of affordable wooden toys for babies/toddlers, or the Little Dutch range is perfect too!
I maybe wouldn't include body wash/shampoo ect as people tend to stick to what they know and know what they like so it probably won't end up getting used