Perhaps you could throw a magnetic pencil holder (such as the zeyce Metal Pen and Pencil Organizer) into the mix to house non-metal essentials. That way, your makeup brushes can join in on the fun ...

From the Flip Magnetic Case with a built-in Pencil Holder to the Rebound Magnetic Keyboard Case 360 for a laptop-like experience, these accessories add convenience without bulk. Protect your iPad ...