You can see several other Children's prayer books here:http://www.archangelsbooks.com/products.asp?cat=Children%27s+Orthodox+Prayer+Books
Unfortunately, from the previews that I've seen, it uses old english. In fact that is the case with most of the Children's prayer books I've seen. Most of the prayers are identical to adult prayers but with some nice illustrations. I know for sure that "Children's Orthodox Prayer Book" and "My Prayer Book" are this way. In my opinion, Children need to pray in language that is accessible and on their level.
I own "Guardian Angel Prayer Book" which is very good, but unfortunately does not actually contain very many prayers. It is mostly an explanation of the divine liturgy for children. The children's version of the prayer of St. Ephrem is excellent however. It's worth it just for that.
The only one that I don't know anything about is "Bless, O Lord"
For morning and evening I currently use prayers for children published by Fr. Anthony Coniaris
"Lord Jesus, thank you for the bright sunlight of a new day. As you made the sun to rise in the heavens, so come to shine in my life today. For You are the Light of the world. Guide me, direct me, lead me that I may do Your holy will and please You in all that I do this day. Bless my parents, teachers and all who care for me. Amen."
I also have my own simplified version of the prayer of Metropolitan Philaret of Moscow.
"Dearest Jesus, I am one of Your children. Take me into Your arms and bless me as You embraced children when You visited us on earth. Hear my prayer this evening. May Your icon which I keep by my bedside ever remind me that while I sleep You are always with me. Make me sleep in peace and let me awaken in the morning to love You and serve You. Amen"