One way that I have been saving since January 2018 is by ‘skimming’.
I check my bank account using a mobile app at least once a day. When I log in, if there isn’t a round number in my normal account, I transfer a small amount out to a different account. Sometimes I transfer the pennies to leave a round number, other times I might move pounds and pence to leave a multiple of £10 in my account. What I move depends normally on how much is in my account at the time.
I never miss these small amounts leaving my account but they are slowly and surely adding up in my savings account.
Is this something you have tried? Or maybe something you could try? Leave me a comment below and share your thoughts.