11 year old GD with new sewing machine

Great ideas. Thank you all. I thought I could send her regular packs and she can face time if she needs help.

DD at the same age has made a shift dress using a pattern and then a blouse, currently she is in to cooking and the machine has been put to one side, but she will come back to it, when she wants something she cannot afford.

Sh e helped me make curtains for her bedroom.

You can find instructions for envelope cushion covers online, sorry can't link.

Cushion covers to match her bedroom?

You could practise putting in a zip, perhaps later on.

I was going to suggest a basic A-line skirt pattern, but not many young girls wear skirts these days.

Dribble bibs for babies? Napkins and napkins rings. Peg bags.
Debbie Shore has a great range of books called "Half Yard", e.g. Half Yard Heaven, Half Yard Home and a few others, with great ideas using a half yard of fabric. I think they're available on Amazon.

Any friends with dogs? Bandanas to go on their collars.

How about a simple bag? Two squares or rectangles and two strips for handles, could be used to store her scrunchies.
My GD loved making lavender bags at that age as she could chose pretty ribbon or lace to decorate them and then give them as presents. She also made small cushions.