I subnet advertise my entire home network, which I consume from my phone and laptop on the go. Primarily to access home assistant, plex and SSH without advertising any of those to the internet - people can and do get hacked both via plex and SSH :)

When travelling internationally, I use the exit node functionality to optionally switch on and off sending all my traffic back home to either work around geo-blocks for my home streaming services or as a pseudo-vpn replacement for particularly dodgy networks.