Overall, you should remember to use high quality hardwoods that do not break easily
. You can purchase wooden toy parts and decorations that are specifically designed with safe finishes for toys. For spindles and axels, you can order a hardwood dowel instead of a regular wood dowel. Don't use generic pieces of wood that may not be safe. Check with manufacturers to make sure that the pieces you use will be safe for your recipients. Using quality wood products and following safety guidelines will help you to create the heirloom quality treasures that you are hoping for.