The internet is awash with expert advice on how you can save money as the cost of living spirals.
Everything from changing the time or order in which you do your grocery shopping to putting foil behind your radiators and cutting showers to just three mimutes.
But discussion group Mumsnet asked users what 'cheeky' ways they save a few pounds and pennies - and the answers raise eyebrows.
While some of the ideas seem, sort of, legit - others are clearly on the wrong side of the law.
Users hit out at those who said they may sneak a few extra items past the self-scan in shops, or trawl vending machines for free items in the dispensing tray.
Monroeagogo posted on the site's discussion group: "Darling Husband routinely reuses stamps. His excitement when an envelope arrives and the stamp isn't marked is a wonder to behold. Franking is the enemy. What cheeky things do you do to save the pennies?"
The post quickly attracted more than 700 replies.
One person said they will happily wait in a petrol station for the person in front of them to finish inflating their tyres, then swoop in to use any time left for free.
Fivemoremimnutes1 said: "When I’m going out shopping or with the fam on a day trip, I take an empty thermos mug with a pre-measured amount of instant coffee. When I need that caffeine hit, I just ask a nearby cafe to fill it with hot water, which they normally do obligingly. I also take a tea bag and do the same later on in the day."
Knockoneofftheshelftowin replied: "The poster getting hot water from a cafe does understand what a thermos is. She is saving money by not boiling her own kettle."
Womaninatightspot posted: "I charge my phone/ ipad at work, that must save a whopping quid or two a year. I also download films/ tv series on the free public wifi at work to save data. Sometimes I make myself a lovely latte in my travel mug to drink on the way home. Crappy pay so I make the most of the little things."
PandemicAtTheDisco shared habits used by 'a friend's ex' including charging devices at other people's houses, using their wif-fi, filling up with food at parties, cadging a lift, regifting or buying gifts in charity shops and checking cash machines early in the morning to see if drunk people have left money behind.
Proudboomer said her sin and girlfriend both dump towels in the wash after one use. When they have left the house she fished them out, dries them and puts them back in the cupboard.
CurryLover56 said they pick up condiment packets at fast food outlets - the record for one trip was 70.
TacoCats agreed: "I ask for extra sauce pots if I have McDonald's etc then keep in the fridge for when I need them. Same with sugar, pots of milk, napkins etc."
SpaceFarce said: "I have a “family” plan on Spotify and share it with friends. It works out much cheaper - we take turns to pay 2 months a year. We do the same with Netflix premium. If I see something I like in a shop, I’ll ask when it’s likely to go on sale. It’s probably cheeky but most shop assistants are happy to tell you whether it’s worth waiting a week or if it’s new in and won’t be on sale for ages."
Giggorata said: "When my office went paperless, I salvaged discarded stationery from the skip. Notepads, plastic wallets, biros, post it notes, lever arch folders and so on."
ParalysisByAnalysis said: "Finding a wee pound in the trolley is quite nice. The trolley boys must make a few pounds from that"
VelvetChairGirl wrote: "I reuse tea bags, you can get 2 cups out of one bag. Checking the ticket machines, phone booths etc for spare change.
"I wash the face masks in the bath with me once a week. My door mat is free newspapers, change em every week or two."
A number of users also pointed out that reusing stamps isn't lawful - and is unlikely to work as Royal Mail can detect when stamps have been used.