My MIL casually mentioned that she wanted one of those contraptions to wind up her yarn. I picked her name for a gift this year and I'd love to get it for her. I know nothing about knitting and DH and I are completely lost.

Could I buy just this: http://www.amazon.com/Stanwood-Needlecraft-Wooden-Umbrella-Winder/dp/B000IG1I8O

Or does it also need to have this to work: http://www.amazon.com/Stanwood-Needlecraft-YBW-B-Hand-Operated-4-Ounce/dp/B001L8DL4C/ref=pd_bxgy_ac_img_y

Are these two separate things? Ahhh, so confused!