A desktop computer. I connect to the internet via a VPN (I'm in a Las Vegas casino as far as the world is concerned) and my router goes via a Raspberry Pi Hole. If it's new to you it enables me to track and block anything that's going in or out of the network, especially ads.
Bought the wife a new Kindle which has Alexa spyware pre-installed, no way to delete it you can just disable it. So I disabled it, but lo and behold it was calling home to Amazon until I blocked it and anything else from Amazon, Google etc.