How should I answer the salary question in an interview?

I currently have a job that I enjoy so I am not really looking for anything new. However, I have been getting pinged by recruiters recently and I am interested in entertaining offers.

When the salary question comes up how should I answer it to get them to give me a range? (note: asking for a range has not worked for me historically). I think the saying goes “he who speaks money first loses” and I don’t want to shoot myself in the foot.

Seeing as I don’t need need a new job money and benefits would be my only motivation to move. So I need a “P.C.” way of saying “I don’t need you if you want me make an offer”