When we had our children we opened them a trust fund with the children's mutual, well i have recently found that the have child trust fund cashback program where by you earn cashback from shopping on-line via their site paid into either their trust fund or your bank account, I'm not sure if you have to have a trust fund to use it.
i have used it for shopping at mothercare and asda and earned a small amount so far. We plan on using it for booking our wedding and holiday for the whole group and i worked out we'd get about £1000 back which can go toward my wedding!!
worth a shot if your trying to save money!!
hope this helps!