Other general tips for this type of thing would be to use up as much as possible if you have things 'in stock' even if it means eating slightly odd combinations.
If people are trying to free up extra money for Christmas rather than being on the breadline, they might have quite a bit of stuff in that they could use up and also be quite freeing from a Marie Kondo type perspective.
Home Bargains etc rather than supermarkets for toiletries, cleaning products and toilet roll. Use washable cloths rather than kitchen roll and wipes if you have them,
World food aisle for things like spices, canned pulses, rice and tomatoes much cheaper than even supermarket own brand ranges.
Shop around if you can, different things are cheaper in different places. Instead of going to the same supermarket on the same day each week, mix and match if possible, which can save loads over time.
Cheaper cuts of meat and the Mumsnet chicken approach. It's not ridiculous frugality to use the breasts for a roast, followed by using the thigh and legs in a curry, pie or pasta dish and then the carcase and bits of meat left over in a soup with pulses or noodles. It's how people used to eat before the advent of relatively cheap mass produced meat and chicken several times a week. A similar approach can be taken with lamb shanks, pork shoulder or a piece of gammon. Look out for offers in the supermarket or butchers and build meals around what is available cheaply - seasonal veg like carrots, potatoes, cabbage, swede, parsnips sprouts all very cheap at this this time of year.
Now is a good time of year to break out the slow cooker if you have one for lots of soups and stews with lots of veg and pulses and cooked with little fuel required.
Home made suet puddings, or rice puddings etc can be a cheap way of filling up perpeptually hungry teens and manual workers.
Also look for ways to increase money available like cashback for changing bank accounts or selling unwanted possessions. Also check that all direct debits are necessary and there are no unnecessary subscriptions. Cut back on Sky if relevant.