Add a custom page to the new media manager in WordPress that only shows attachments uploaded to this post with no controls to change it. This is undoubtedly bad programming, but that javascript is a huge mess of undocumented code with little to no help in figuring out how to extend it.

media-wut.js

(function($){
	var media = wp.media,
		jeditor = {
			oldMainMenu : media.view.MediaFrame.Post.prototype.mainMenu,
			init : function(){
				media.view.MediaFrame.Post.prototype.mainMenu = function(view){
					jeditor.oldMainMenu(view);
					var jState = new media.controller.Library({
							id: 'test',
							library: media.query({uploadedTo: media.view.settings.post.id}),
							title: 'Test Library',
							router: false
						}),
						jMenuItem = new media.view.MenuItem({
							id: 'test',
							text: 'Test',
							priority: 200,
							controller: view.controller,
							state: jState
						});
					jState.set('menuItem', jMenuItem);
					view.controller.states.add(jState);
					view.set({
						'test': jMenuItem,
						'sep2': {
							className: 'separator',
							priority: 199
						}
					})
				};
			}
		};
	$(jeditor.init);
}(jQuery));