What are these for?

[joell]

Originally Posted by Spellino

Is the interior light stock or aftermarket?

Is a optional accessory made by Toyota and normaly installed by dealers.But as IllusionX said it could be a seatbelt sensor, those have similar construction and is worth checking where they go.
I am just judging by the form of the connector and the location, need to check my car but mine doesn´t have sealtbelt chime or sensor.