I have a friend who is battling cancer. She has a PAC, a small machine that provides pain medication as she needs it. That machine needs to stay with her. The hospital provided her with a bag that was supposed to go over her head and one shoulder and hang down. Because of various medical reasons no bag could hang across her neck and shoulder, so she asked me for help in designing a bag that would work for her.
Her machine was along her leg and within easy reach, so she could make any adjustments she needed to through the netting.
Now her machine rests beside her on her chair or the couch while she is sitting. No more forgetting to grab it when she starts to walk.
It took only a bit of netting and part of an afternoon to help a friend.
UPDATE: Some changes in the style of the bag.