I have a couple rubber grippers in my kitchen too. I remember once before I was married and I lived alone in my apartment I was making spaghetti and I couldn't get the jar of sauce open. I tried every trick even using the rubber gripper. I was about ready to give up and I heard my neighbor coming up the stairs. He had recently moved in and I had never talked to him but I was desperate to get my sauce jar open so
I opened the door and said hi and asked him to open my jar. He looked a little surprised but opened my jar for me. I said thanks and went back in my apartment. He probably thought it was some sort of hitting on him thing at first but nope, I just wanted spaghetti. It's kind of funny looking back on it.