Session Trick

session-property.js

SessionProperty = function _sessionProperty(key, defaultValue) {
    if (!_.isString(key)) throw new Meteor.Error('key must be a string');

    return function(value) {

        if (_.isUndefined(value)) {
            value = Session.get(key);
            return _.isUndefined(value) ? defaultValue : value;
        } else {
            return Session.set(key, value);
        }
    }
}

usage

var templateName    = 'myTemplate'
    ,searchKeywords = SessionProperty(templateName + '_searchKeywords', '')
    ;
    
// Getting the searchKeywords value
var currentValue = searchKeywords();

// Setting the searchKeywords value
searchKeywords('new value');