with_stickit_base_mixin.js

define(function(require) {
    'use strict';
    
    require('stickit');
    
    return function(options){
        // NOTE: this assumes inputs
        var bindingDefaults = {
            events: ['blur', 'paste', 'change'],
            onSet: 'onSet'
        };

        this.after('initialize', function(){
            var bindings = (options && options.bindings) || this.bindings;
            if (!bindings) {
                throw new Error('Bindings missing');
            }

            // Take selector: 'field_name' bindings
            // and have them use our default binding config
            // Leaves selector :{} ones alone
            _.each(_.keys(bindings), function(selector){
                var binding = bindings[selector];
                if (_.isString(binding)) {
                    binding = _.extend({
                        observe: binding
                    }, bindingDefaults);
                    bindings[selector] = binding;
                }
            });
            this.bindings = bindings;
        });

        this.setDefaults({
            // bindings: options.bindings,
            // No-op to be overridden/wrapped
            onSet: function(val, options){
                return val;
            }
        });
    };
    
});

with_stickit_marionette_mixin.js

define(function(require) {
    'use strict';
    
    var withStickitBase = require('./with_stickit_base_mixin');
    
    this.mixin(
        withStickitBase,
        options
    );

    this.before('onRender', function(){
        this.stickit();
    });

    this.after('onShow', function(){
        this.stickit();
    }); 
});

with_stickit_mixin.js

define(function(require) {
    'use strict';
    
    var withStickitBase = require('./with_stickit_base_mixin');
    
    this.mixin(
        withStickitBase,
        options
    );
    
    this.after('render', function(){
        this.stickit();
    });
});

Credits: @parris, @mscheibe, @kevinastone, and @mralex