Channel?
Regulator? It is a regulator clip. I just recently replaced mine. You can get them online at GM parts direct.
The thing that is a sash like object that holds a katana is called an obi.
a clamp
The thing that holds dead man ashes is called an Urn I believe :)
A sheath.
A bobbin or a Spool
Filament.
Tomb or sarcophagus
sunglasses holder?
an easel
The thing that hangs over any window to keep the sun out is called an awning.
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.