For my 10 year old GD I made up a crafting box of all manner of goodies.
Felt squares - embroidery floss - scissors - variety of needles - a pack of fat quarters - sewing thread - fabric glue - hessian - beads - sequins........the list was endless and she loved it. I also made a couple of patterns for her to make a needle case and a cover for the scissors, both of which she made up and was so proud. It kept her off her devices too and we regularly have sewing sessions together.