Hope we can get some clues as to what this item is or does! Please let us know your ideas.
There are 4 items tied together with black fabric.
1. the brass dome shape with flat base
2. the brass hand, which may be acting as a key holder
3. the long silver black item with a flat base with criss-cross pattern
4. the coppery key-like item
The 4th picture below shows how small it is in comparison.