I have 3 children 11,9 and 4.
I just constantly seem to be struggling with finances. I'm single and on UC..I increased my hours at work to earn a little more just to put in a fun fund cause we never seem to do anything fun as a family. No holidays or meals/days out just because I always seem to struggle. But now my children's child Maintenance has stopped so I'm back to struggling again as well as working more.....but lately my eldest has been asking for pocket money which I would love to give but just can't afford it....not as a weekly or monthly thing anyway because there's always 'something' that pops up in a month that I need to pay for...I do pay for clubs for them to go to, swim, football ect but if I didnt they wouldn't have a life. My eldest says things like, it's a good job Santa brings Christmas presents cause you wouldn't be able to afford them 
I have told the kids I can't just buy things they want all the time cause I've not enough money, even if it's just an ice cream...but I don't know if I should be saying things like that to them or not, on one hand it makes them realise they need to be careful with money and not ask for everything but on the other it could make them worry about of they are 'poor' not sure what to do.