Going back to the big screen tv. Some people really want the big screen, regardless, but sometimes it's a symbol of poverty.
You can get a 19 inch tv for £80 from Argos. Find £80 can be a stretch in a household where all the pennies are counted. If you go to Brighthome you can get a 28 inch tv for £3.50 per week. Okay, you pay back £546 in total, but you can afford the £3.50 per week easier than the £80 outright.
And Brighthome do an all singing, all dancing, smart, Hisense, 4D tv for £10 a week. That £10 a week for something glorious is still probably more affordable than the one off hit of £80, even if you pay back a total of £1560. Okay, they come and take it back if you're late with the payments, but you can always catch up with yourself and go again for the £10 a week something glorious.
How about the washing machine going? There are hardly any launderettes around and if heating a damp house is a problem then doing washing in the bath is going to be an issue. You can get a washer dryer for £9.50 a week. Okay, you end up paying £1482 back and it takes three years, but the nearest model to that at AO is £499. £9.50 per week is much easier than £499.
Yes, there is gumtree, eBay, Dodgy Dave on the market etc etc but it must be incredibly tempting to go for something nice, shiny and new that is affordable on a weekly payment.