Just

the sight of them reminded you of all the things she could do with them. Excite you...smother you...tease you... It brought back memories of last night, a 2 hour titty-fuck edging session that ended with ice and a chastity cage. Just the sight of them reminded you that she OWNED you, because she had these. Right now you were pretty sure she had just told you something, but you weren't paying attention and she was going to enjoy punishing you for that...