Weird metal thing attached on a rope that resembles a key with a

What is a Via Ferrata? Everything You Need to Know

How to tie a Prusik knot - Quora

10 Medieval Torture Devices

The 6 Best Multi-Tools

50+ Unusual Musical Instruments (From around the world)

Round black metal stick with a handle and a bend at the end : r/whatisthisthing

Thread For Jewellery Making Guide

What is a horse's rope halter called? - Quora

This object has some sort of needle extractable from the back. There's a tiny parchment rolled up inside, and something that looks like a weight, attached with a metal chain. : r/whatisthisthing