I would have killed for a clothing allowance when I was a kid! I got what mum bought and whinged :)
But, back to the serious business. Look at regulars with a fine toothed comb. My coffee machine manufactuer wants me to pay £60 a year for quarterly water filters. Hold on, we're not in a hard water area, I've got a Brita - so, no. It'll be 65, 70, 80, 90 a year for quarterly filters - by the time the machine's knackered (5 years) By which time I will have paid for the machine twice.
My water filter starts blinking at me after three weeks, but all I want is to not taste pure tap water. I can taste as soon as it's going funny, THAT'S when I change it. So instead of £6 every 3 weeks it'll probs be £6 for 12 weeks.
Fabric conditioner is an utter waste of time. Look at soap nuts!
Apple and other computer backups. Well, I'll delete a thousands and thousands of pics I'll never look and plonk precious ones on a hard drive.
Kindle books. Isn't it something like £8.99 a month for 2 books only? I've looked at those books, most of them are absolute crap. I've got an online account with my library, BorrowBox, and Pressreader for free newspapers and magazines.
Years ago you'd get a CD Rom for home finance management software which you legitimately now cannot buy, but now you have to pay someone £5 a month for an app - and - whilst I'll concede that it's probably worth it for complicated finances and different strands of investments, pensions etc, for just the two of us, my receipts get bunged in a monthly plastic wallet and if we're feeling poor at the end of the month, I'll rifle through them and say "well, we spent £100 on chocolate 'treats' and wine because we were feeling miserable, we should have just gone out for some countryside drives."
It's getting to the stage where companies can't get funding unless they have a subscription/more money in the future model. Take, for example, fairy liquid, who are now flogging a PRE WASH washing up liquid.
Get outta town. You boil the kettle, it soaks for 20 minutes, you scrape the crap off, and you don't waste £4 a month or whatever on such utter, utter nonsense. Or crap that goes in your washing machine that KILLS ALL THE GERMS. You what? Personally, I don't make a habit of sucking my bedsheets after I've washed them at 30 degrees.
They can and will take ALL your disposable income unless you scrutinise and rationalise the living daylights out of every single penny you spend.