You can set up zones based on your phone's GPS (there is a Home Assistant mobile application that can report data back to the server), or you could set up an automation based on whether your phone is connected to your home's wireless network. Or probably even via some Bluetooth beacon.
Open blinds in the morning, shut them at sundown.
Turn on porchlights after dark if I'm not home. Turn them off 10m after I'm home.
Turn HVAC up/down when I leave the house, revert when I get home.
Unlock doors when I arrive home. Make sure they're locked when I leave.