This odd looking object is part of a set of cups used for Cupping Suction Therapy.
This is not a recommendation but simply a report on the results that were obtained when my daughter tried this method of treatment on me for a very painful hip.
Generally, I do not try any treatment other than what my doctor recommends, but due a very painful and long endured hip, my daughter bought this set of silicone cups and came armed to try the treatment on me. She first applied some arnica oil mixed with grapefruit oil to the painful area. The she very gently squeezed the cup to create a suction and massaged the painful area. At first it was unpleasant and sensitive but as the minutes ticked away it became less painful and amazingly I had relief for the first time in a long while.
I have been applying the cup on a daily basis with the oil, and I am delighted to report that the benefits have been amazing.
I cannot say what conditions will benefit from this treatment, and the purpose of this post is purely to report on my personal experience.