a bar of chocolate from a child who remembered I said it was my favourite one time, and decided to get it off her own back.
some small art supplies for a hobby I enjoyed. It was an older child and she went out of her way to find something she thought that would be related
a chunky bead necklace that one of the mums had chosen for me based on the colours I often wore. It wasn't expensive or fancy, but the colours were just exactly right.
I've also enjoyed a gift certificate for a coffee and cake at a cafe, gift certificates for plants, books, etc that are hard for someone to choose or awkward timing (plants just before a holiday aren't always good). Not large values necessarily, but hugely appreciated because it again showed that there was a specific reason why they chose that particular gift certificate, and I thought of them when I had my cake or whatever.
I don't get that many gifts, and don't expect them, but I do appreciate anything I am given, and especially when there is a personal element to it - and obviously cards are often the most personal. I once got a card several years later, and it absolutely made my day.