How much to spend on Bridal shower gift?

My friend is having a shower next month and a lot of her gifts on her registry at bed bath and beyond are fufilled. Theres not a lot to choose from so I was debating between 35 dollar sheets, 20.00 corningware, or 20 dollar canister set. I was thinking about spending 25.00 because money is limited but is that to cheap? She is a good friend.