Ben and Holly's Little Kingdom: Volume 5 - Trip to Seaside (2010)

Holly joins Ben and his family on an Elf trip to the seaside and Mr Elf tells her that no magic is to be used. But when they realise that on one has remembered to pack lunch they ask Holly to use her magic to make some. In return, the Elves build her a giant sand castle, but Holly mush use magic again to rescue herself and Ben when the tide comes in and they are stuck...