Would actually really love to know more about this and the approach you are taking and what you are learning about it. What precautions are you taking for instance to create a sparrow wallet so it is fully anonymous?
Discussion
I’m no expert but I’m going to get a VPN running on my computer, download Sparrow wallet which allows you to do coin joins, and do a coin join transaction from there to the Cold Card. I’ll let you know what I learn.