I thought this myself, using a few circuits and it really doesn’t take that long. Take any physical object and place it in your head. Then link that to a trigger zone behind your back and a clamp just above your head. When you reach behind you, it clamps the Maker Pen back above your head and then it returns to a physical object a fraction of second later. This is all speculation as I have never tested it but seems incredibly simple and not many problems should occur.

IMO this is only a good idea if those maker pens vanish without a trace when you drop them. Maybe not instantly, but after you don't use them for some time. And they should not be saveable.