Could you please recommend a gua sha massager?

I don't have a gua sha massager at home yet, so I was really disappointed that I couldn't participate in the gua sha challenge this time, just like last time... ㅠㅠ

Those who have tried Gua Sha massage have highly recommended it, and since I really want to participate in the next challenge, I am planning to buy a Gua Sha massager. Could you please recommend a good product after you have tried it?