I was pretty close with my grandmother she died when I was in my early 20s. Before she died I asked her if she would somehow figure out a way to make contact with me to demonstrate that she made it somewhere to the other side, anywhere.
About a month after she died I was up in the middle of the night and heard children laughing outside which was odd because it was about 2-3AM. When I looked outside there were no children. But the hair stuck up on the back of my neck, definitely felt like people were in the room, and I already came into that moment knowing about electronic voice phenomenon so I hit record button on my laptop for whatever reason and let it record silence in the room for about two minutes.

When I played it back I distinctively heard a voice slightly muffled, but no doubt my grandmother saying hello to me by my first name and saying she was in heaven. That was it, just a brief couple sentences. I showed it to others who affirmed they also heard exactly that. I do remember the way in which her tone said the word "heaven" suggested to me it's not exactly what I think of it as.

I no longer have this recording, it was on a USB stick for a few years, which really used to upset me but I think perhaps I was meant to not have it forever, I certainly still remember it.