MB here. I just give a card and check. Nothing says "Love working with you!" like money.

How nice of you to honor your nanny on her anniversary.

The gift idea you're thinking of is great!
If you know she drinks coffee or tea, a great travel mug is an option. Or coffee/tea.

Our nanny's one year anniversary is coming up and I would like to give her a gift. She got a raise 2 months ago already, so she won't be getting another one right now. (The raise was early because we switched share families and redid the whole contract with a raise.) she will get a holiday bonus at Xmas of 1-week salary, plus possibly a few extra days off. So what is appropriate for an anniversary here? I was thinking a small gift, like some nice gloves, plus a small bonus of around $150.