gistfile1.js

Template.foo.helpers({
  data1: function(){
    var array = [];
    var storedData = Session.get("data");
    //underscore
    _.each(Object.keys(storedData),function(key){
      array.push(storedData[key]);
    });
    return array;
  },
  data2: function(){
    var array = [];
    var storedData = Session.get("data");
    //lodash
    _.forIn(storedData, function(key){
      array.push(storedData[key]);
    });
    return array;
  }
});