What's a good Xmas gift for a motorcycle rider? I have a wonderful student employee (19 year old girl) who rides a sports bike. I don't know the first thing about motorcycles but I think she said it's a Ninja. She gave me a lovely thoughtful Christmas card and gift, and I want to do something nice for her as well.

Background: she's wanted her bike for years and just bought it in August and loves it. She's super tiny- probably 5"1, and I think she's a size small. I wanted to get her something related to riding under $60 but I'm clueless for ideas. Any thoughts?