I use a Laptop for most work, I like to be nomadic and don't like to do my business in one place. I use an ASUS Zenbook Duo 14-inch since I like to have two screens on my laptop. It works perfectly with Fedora.

I have an old Lenovo ThinkPad X200 with the boot firmware replaced with Libreboot and no OS installed. I use a TAILS USB stick on that only, mainly for when using Tor.

I use a GrapheneOS Pixel 6a with no SIM and airplane mode always on. If I need cellular network access for whatever reason I use a portable 4G router, some of them can receive SMS' by a display on them.

I use a couple spare mini PC's to run a homelab, I self-host Tor onion service mirrors of things on them, or as a NAS.

I have a generic desktop I use for playing video games or anything resource-intensive but I don't use it too often.