We have everything we can set on autopay. CCs are set to pay "minimum due" but since I pay the balance each month, this doesn't happen...it's only for emergency situations such as the OP describes. The *only* bill we get that isn't on autopay is the property taxes and it would take quite a while to actually have the house sold for unpaid taxes. As a matter of fact, I don't think they would actually foreclose on the house, just keep adding to the tax lien.
So, as long as my pension check keeps getting deposited and there wasn't any errors by the banks, everything would be on autopilot for quite a while.
Nonetheless, my SIL/BIL has access to our "doomsday" folder which includes instructions, account passwords and a durable POA in the worst situation.