Christian Focus Publications, based in Ross-shire, Scotland, have just gone online. I recommend you take a look at their new website, and in particular at their publications for children. They do a great series for young kids called "My First Book", including My First Book of Memory Verses, My First Book of Bible Promises and My First Book of Questions and Answers. The blurb from this last book says:
"Children always have questions about what it means to be a Christian. Do they need a long philosophical answer? Not always and it is simple answers to deep questions that feature in this book. If you have ever wanted to know how to explain the Christian faith to young children in bite-sized chunks then the 114 profound questions and answers, backed by scripture proofs provide an invaluable tool to get you started."
We are working through a similar question book with our 2 1/2 year old daughter and it is immensely valuable for familiarising her with biblical truth. She loves answering her questions after breakfast and she even tries to teach them to her 3-month-old sister (without much success as you can imagine!). They also have a range of books for older children.
Another book available from Christian Focus which I've found very helpful recently is Aren't They Lovely When They're Asleep by Ann Benton, which is full of really practical, helpful advice for parents.
There are also plenty of titles on subjects other than parenting (I'm afraid I'm a bit preoccupied just now!) and in particular, the Christian Heritage section is worth a look.