A bit of an unconventional topic for a forum like this, I'm just not sure whom else to ask than a bunch of leatherworkers.
Preface:
In DND, spellcasters (Wizards, Sorcerors, and Warlocks) use an Arcane Focus. An Arcane Focus is a special item to channel their magic, replacing the need for certain material components when casting spells. Spellbooks, hold spells to later access and utilize. Normally they are leather bound books of pages. Some spellbooks could use metal sheets in which spells are etched with acid. My character's "spellbook" was a staff with leather straps attached to a staff. Braided leather cord, leather straps with increasing length and width with spells engraved into them. That staff later replaced with a Scimitar when taking the Bladesinging subclass.
Question: What would you use to gather the bundle of leather straps and braided cord? That could also be attached to the ring pommel of a scimitar?
Apologies if this isn't posted in the right topic or if this isn't something people normally ask.