http://agave.js includes (prefix)getPath by default on any object.

    var mockObject = {
      foo: 'bar',
      baz: {
        bam:'boo',
        zar:{
          zog:'something useful'
        }
      }
    }

So:

   mockObject.getPath('/baz/zar/zog')

or, alternatively:

    mockObject.getPath(['baz','zar','zog'])

will return:

    'something useful'

It's also got a bunch of other useful stuff like 'kind' (closest prototype of an object, that works consistently everywhere), number methods like (2).weeks().ago(), and reads more cleanly than underscore as it uses actual methods.