One of my paranormal experiences

Every since I was little I have always been curious about ghosts' and interested in learning more about the spirit realm. That is why I have this particular blog.
I satisfy my curiousity by watching the many reality based, ghost-hunting shows on TV. While watching one of the shows I was reminded of an experience I had while I resided in an apartment complex in Kenmore, NY.
Just for the purposes of "setting up" the experience, I want to share a few details about the frame of mind I was in at that time. I'm not giving these details in an attempt to explain why this incident happened.
I was single at the time but I did not live alone. Around the time of the incident I had to put down a very sick cat I took from my mother's care. She no longer wanted to take care of the healthy cat. After a few years, his good health took a turn for the worst. The vet told me that there was no guarantee that the costly treatments they recommended would treat and cure his illness. Needless to say, I loved the cat and it was very hard for me to accept the fact there was nothing else I could do for him. I was the last familiar face he saw before I surrendered him to the S.P.C.A.
The apartment was a quiet 4-plex ( 2 apts on top of 2 bottom apts ) that retired, older, people usually resided in. One of our single neighbors recently passed away upstairs and I wasn't told about her passing until after the fact. All of the tenants shared a common, basement storage area so we were all familiar with each other so I found it strange that no one took the time to tell us she passed away.
OK, enough boring details.
One night I woke up just before 3 o'clock in the morning. The entire building was quiet and my fiance' was still sleeping in our bed. For some reason I still remember awakening @ 2:48am. I noticed the time on the green, digital readout on our oven. The oven was right next to the sink and I decided to have a glass of water while I was up. To my immediate left was a kitchen counter-top that looped around away from the sink. On the middle of that counter, not on the edge, sat a curled up bag of potato chips. After filling up a glass of tap water at the sink I turned to my left and, much to my amazement, the bag of chips flew off the counter and landed on the floor. I was, at least, 6 inches away from the counter and my fiance' was still sleeping, so there was no reason for the chip bag to fly off the counter like it did. I didn't cry out and I can honestly say that I was startled for a few seconds but I was never scared. I didn't wake up my fiance' to show her what happened. I simply finished my glass of water and went back to bed. If I remember correctly, it was a weeknight and we both had to get up soon to go to work. Nothing else ever happened in the apartment, but I did pay more attention to the goings on in my living space from that day forward. I find it rather odd that nothing else ever happened while we lived there. I've learned that paranormal occurrences usually happen a few times before stopping completely so I was expecting something else to happen but nothing ever did. I believe that it may have been my recently deceased cat returning to pay me a final visit. He may have wanted to show me what he could do now that he was no longer sick and in a better place. This is what I'd like to believe but I cannot explain why the chip bag flew off the counter.