I am just using some old Netgear thing I had lying around as a wireless router for star parties, the critical thing was it uses a 12VDC power input so it works with my existing power setup and does not add another adapter.
I connect via Teamviewer without using an account (So no pesky accusations of being a business rather than private user if you happen to log in from more than one PC) I have it set up in the settings for exclusively LAN connections, so all you need is the PC name on the network or the IP address, and the password you set on the host PC.
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