Alchohol certainly could/would be a barter item. You would have to weigh the ethics and dangers associated. Cigarettes would also be in high demand.
As the "No electric" scenario continued, We would be in a 3rd world Goods&Services economy in no time.
If you have some "goods" , you will be able to barter. If you can offer Survival services, you will also be able to trade and barter. Knife sharpening? Quilt making (from old clothes and material).
Any type of skilled manual labor would come in handy. Less-skilled labor may be in demand (digging holes, chopping wood) , but there will be a lot of people standing around with thumbs in their pockets, so, there could be a large unskilled workforce.
Computer programmers and white collar workers that never have done any manual labor find themselves just a a little less useful in this scenario.
Goods: Alchohol, cigarettes, cooking oil. flour, sugar, Salt, (food in general) firewood, extra blankets, gasoline, etc etc. Knives! you have extar knives that would fetch a good barter price! Spare outdoor grill?
Once the propane is exhausted, the gas grill can be gutted and used as a wood burning cooker.
Services:
-Water Gathering (setting up someones gutters to catch rain), or even barter your surplus.
-Knife & Tool sharpening, general shade tree mechanical stuff.
-Heaters: You have some simple sheet metal tools, and can handcraft wood heaters out of duct woork and sheet metal.
-Bicycle repair! People will take to bicycles for simple transportation, but they will have flat tires and such, and need tune-ups.
-Protection: Neighborhood protection, if you are armed and can take care of thigs, the neighborhood could chip in for your services, though, it will take at least 3 or 4 able bodies and minds to work shifts patrolling the entrances to your neighborhood.
-Carpentry & Woodworking: people will eventually need things repaired around their houses.
Also, this tidbit came to mind: Some people will naturally just up and leave.
(If there is a way out).
Within 24 to 48 hours of their departure, what happens?
Most likely, eventually, their places will be ransacked, pillaged for evrything useful. Less fortunate or displaced people may move into the vacant residences. along with their kinfolk and extended families.