It feels like everything we make is joined to something else to make it complete, how about a page listing all of the joining techniques.
Brazing –
Glue – there are many types of glue/adhesive, from those used to join paper to more complex glues that can bond metal to glass.
Nails –
Nut and Bolt –

Rivets – a one time mechanical fixing used to secure two or more pieces of material along a seam.
Silver Soldering – similar technique to brazing, but has a lower melting point and tends to be a more commonly used technique for the the model engineer. Silver soldering in a kiln is a common industrial technique that can be used in the hobby workshop for small parts.

Silver solder is available as a paste that is combined with a flux. This paste is delivered with a syringe. It is easy to use a small amount of this paste and to squash it to a thin layer between parts. This paste is also available in different grades that melt at different temperatures.
Soldering – Often described as soft soldering as this has a lower melting temperature and remains quite soft. Used in electrical joints and for a lot of metal constructions where they won’t see very high loads or temperatures in use.
3000BC Evidence of soldering being used in Iraq.