Happened to me between paydays a few years ago.
Luckily I was in a training class that week, I would drive the 80 miles to class in the AM, pull the ECM fuse upon arrival, which stalled the engine. Then unhook the battery to shut everything else down. When time to go home, reinstall ECM fuse then reconnect battery, start up and go home. Leave only the ignition key in it and lock doors.
Worked till I got paid and could fix it.
edited to add, yes it was one of the Bonnevilles, ended up costing 90 bucks to fix, needed all I had for gas that week