Buntline Hitch
The Buntline Hitch is surprisingly secure for how little rope it takes.  However, the Buntline Hitch jams easily, and so a Gnat Hitch, which also has better security, or Slipped Buntline Hitch is recommended instead.

Note that the last half hitch must be near the object, otherwise you'll have
Two Half Hitches, which is a fairly insecure hitch.  Draw the Buntline Hitch up to the object after tying to secure it.

Many men routinely tie this hitch around their neck without realizing it (in the form of a necktie).