"用以绑缚之物" can be translated as "binding material" or "tying material" in English, depending on the specific context.
"Binding material" often refers to something used to secure or fasten items together, such as ropes, strings, or bands, especially in a more permanent or structural way.
"Tying material" is more general and can refer to anything used to tie or fasten, which may include strings, ribbons, cords, etc., often in a more temporary or decorative context.
Choose the one that best fits your intended meaning.