|Fig. 1. Threaded 1/8"-to1/4" adapter|
To ensure I have a convenient and secure place to keep it when not in use, I taped an old input jack (an incredibly inferior one removed from a Silvertone bass) to the side of the head band (Fig. 2). Now I just plug the adapter into that when I'm not using it.
|Fig. 2. Adapter holder, sans adapter|
|Fig. 3. Adapter holder, with adapter|