For the record I'm an atheist and so don't believe in ghosts but I can share an experience my siblings and I had. I was upstairs when my brothers started making a fuss, and on going downstairs was told there was something outside in the bushes shaking them really hard. We all stood in the front doorway, front light on (it was completely dark out), and watched as the bushes shook - and I mean really shook - for quite a long time. My brothers couldn't find anything in these bushes to make them do that. (They were quite tall, perhaps 8 feet, and nothing but a long empty driveway behind them.) Imagine someone standing there and just really shaking bushes hard, that's what it looked like, but there wasn't any wind and it was just this one big bush, and not the ones to either side.
My eldest brother is really into spirituality (though not paranormal things), but my other brother was not, and very convinced there had to be a rational explanation. I was trying to imagine squirrels somehow doing it, but flashlights revealed nothing, and like I said it just kept going on.
So my eldest brother is convinced there's spirits about and it could potentially be amazing / something special to go for a walk in woods right then, and my other brother isn't convinced there are spirits about but is willing to go. He wants to take flashlights and a knife, but my brother is emphatic that neither shall be brought. I remember him very firmly saying that to bring a knife would be bad and project negative energy and potentially attract violent spirits. (And hey, "The blade itself leads to violence" is a paraphrased uh Plato quote!)
Our other brother argued against this for awhile as he thought that was silly, but in the end agreed and off they went into the woods for a long walk (the bush had stopped shaking but then), I was in bed asleep by the time they returned. They left the front door open though, front light on, and I was scared to approach the front door to close it. (I was somewhere around 11 I guess?) Eventually did, and a bit later parents came home. I don't recall my brothers saying anything interesting happened on the walk.
Many years later, I was in bed reading one night and that same eldest brother (who'd been out walking our precious dogs), I heard him come inside the house and rather than go through the usual evening routine of dinner for the pups heard him unusually come straight up the stairs. He came into my room and asked if I wanted to experience something unusual. He said there was something going on in the woods out behind our house, something was just throwing things and the dogs weren't concerned. He'd stood around for a long time listening to it. He thought it was Bigfoot.
I was like sure I'll go check it out, though I didn't really think much of it. We went out into the trails behind our house (left the dogs), it wasn't a long walk at all (5min max), and it was obvious when we got to the spot. Something indeed was out there in the trees, and every once in awhile throwing things. It just sounded like someone picking up a stick or rock something and tossing it. (it would land with a thud, so it was something with a bit of weight).
No flashlights of course, and the thuds were quite close, and we just stood there amongst the trees listening and peering. Eventually, I got used to the sound, and got tired of standing and crouched down, and it being late, put my arms on my knees to rest my head on. I stayed like that until the tossing sounds stopped. When we got back home, we'd been gone for about 45 minutes which surprised me, as it didn't feel like it was that long. (I discussed that with my brother, about how easy it is for me to zone out like that, and we both agreed it was from all the long road trips I experienced as a child that go me used to just sitting still for so long
)
In hindsight.......going out in the middle of the night and listening to someone throw rocks or something for over half an hour is just really dumb. But, whoever was doing that, they were doing it for about an hour, so perhaps I can say they're even less intelligent than us? (It was around I think 12:37am when we got back, that just stuck with me for some reason.) I uh highly doubt it was bigfoot or (as my brother also suggested) some sort of spirit just making some noise for the fun of it.
My stories are very underwhelming I know, especially the second one, sheesh. "Someone threw things around in a forest for awhile oooOOOooooh"
I can't say for certain, of course, that there's no such things as spirits or an afterlife, I just would need a lot of proof I suppose. Personally, I am quite content at the thought of oblivion awaiting me. It sounds peaceful. No suffering, no sadness ever again.