Hi!
Well my first thought would be a penny sweet (assuming they still do them at a 1p, inflation and all that) other than that she may get a 1p bargain on eBay?! Looking forward to seeing others suggestions :o)
Could they collect their pennies together to buy a packet of something that would split down to each item costing a penny? What about buying a bag of millions sweeties and splitting them into 1p portions?