We've been living frugally for years, it is very liberating, especially not Henning a house clued up with unnecessary stuff.
Off the top of my head, over the last two months we have 'saved' a huge amount in the following ways:
Calling or internet provider and asking for a reduction, went down from £55 to £36
Fixing our washing machine ( the heating element broke) that cost £19 including postage to fix, instead of buying a new washing machine
Getting a tumble dryer for free off Gumtree that is broken, and fixing it for £3.50 ( the thermostat had broken so we just need to replace that). We will be using it over winter as we just can't cope with the amount of washing that needs drying otherwise. Never had one before but we are a family of five.
Sold all the kids clothes that don't fit them anymore as bundles. We have calculated that we made enough money from this to justify running the tumble dryer once a day for five months ( over winter)
Identified why one of our car tyres had gone flat and fixed the problem ourselves instead of buying a new tyre. We also service the car ourselves so save a fortune that way but obviously not everyone can do this.
Or garden gate was rotten, wet got a 'new' second hand one for free from a Facebook selling page.
We picked loads of apples and pears over the last six weeks from the community orchard, instead of buying fruit. Lots was pureed into smoothie pouches for the kids as snacks (the smoothie pouches are reusable and are amazing, definitely worth investing in)