I would have thought to buy these myself but probably would have refrained because it felt frivolous, but I got one of these stroller blankets in a really beautiful print from a friend as a baby gift and I really loved it:
https://tesababe.com/collections/xx-stroller-blanket
My family is really into practical baby gifts and money was tight for us when we had our first, so I didn't have a lot of stuff that was just pretty and special. I didn't realize how much I needed a few things like that until I got this gift.