Are there any apps that help manage an offline reading queue that includes local files (e.g. Office docs) rather than online web pages, without having to upload them to a distinct service beyond perhaps DropBox / Box / etc? I want to be able to save or drop files into a folder, organize them into a queue, have them show up on other devices, and check them off somehow after I've read them on iPad or similar. Some are sensitive so I'd like to avoid uploading them to shared services like Instapaper or Pocket.