I've been using Inateck's portable 10W bluetooth speaker to great effect. It is a great speaker/stand for my iPad and makes viewing TV and movies a lot more pleasurable.
This Inateck speaker has a sturdy, fold-out leg on the back that creates a stable iPad stand while also offering amplification for whatever I'm watching. It also serves as a nice way to take music or video with me as I move around the house.
The unit was easy to charge and simple to set up. Powering up the device puts it into a discoverable mode, and you are quickly listening to decent sound for a $30 bluetooth speaker bar.
