a clamp
The thing that is a sash like object that holds a katana is called an obi.
The wood part of a pencil is called the barrel or casing. It holds the graphite or lead core in place.
The thing that holds dead man ashes is called an Urn I believe :)
A bobbin or a Spool
Filament.
A sheath.
The natural cement that holds wood cells together is called lignin. It is a complex organic polymer that provides strength and rigidity to the cell walls of woody plants.
an easel
sunglasses holder?
Tomb or sarcophagus
The "necklace" piece is called a Lanyard. Then the other piece that holds the card is called an ID Protector.
Always called it a tree stand.