while we are going down this route, I've been on and off restoring a large place for 10 years (as and when i make money I crack on and do a bit more), Ive had a number of odd experiences there, mostly of a nuisance nature.
Typical example, working on a ladder in one room, dropping an electrical screwdriver, only for it to disappear into thin air and me find it in another room....
Irritating, you can almost hear someone laughing, I occasionally tell them to stop taking the ****!
Another example is working on my computer in the office only to have it turned off at the wall, that's happened three times to me, once to my wife, loud footsteps up stars on occasion, but that's about it, you get used to it....
The bare bones of my property are probably early 17th century, so I shouldn't be too surprised I guess...
Maybe I will join in the fun one day ( hopefully 30 years or more) and start taking the **** out of the next owner!