HELP! What do you get for your mother who you hate??

I hate my mother with a passion, but I have to see her this year at Christmas if I want to see my younger sister who is only 8.

My mom and I’s relationship is inconsolable so please don’t suggest that as I’ve made it very clear.

But if I’m going to be seeing her and I think she is getting me something, what is something small I could get her??? Any suggestions???