Emergency remote access in to tailnet - eviltoast

None of my services are exposed to the public internet and are only accessed by myself through tailscale. One scenario, which still concerns me is “Away from home, access to none of my devices, need to use public/other computer to access files”.

Short of downloading tailscale to said computer (which I likely wouldn’t want to do/may not be possible, what would be the best way to have a backup entry way? Linode VPS with guacamole and tailscale to remote into a machine on the network? Something different entirely? Let my know what you use/would suggest