prayer book

What do you guys think about having tools for aiding in prayer such as prewritten prayers (like the Book of Common Prayer or Valley of Vision) or prayer beads like the Lutheran Wreath of Christ or Anglican prayer beads? If you are in favor of them, how do you keep them from being mindless? If...

Do you guys think that a Presbyterian/Reformed prayer book is something of worth? I know there is the Book of Common Worship (PCUSA) But currently, Orthodox, truly Reformed Presbyterians (P.C.A, OPC, EPC..etc) do not have any prayer book. What are your thoughts? Should it be something we pursue...