Fresnel Lens
It is always worth carrying a Fresnel lens around in your suitcase. It is quite portable and thinner than a Frisby but about the same size. If you are staying in a hoose with lots of history you can stick the lens onto a window and peer through it to see if you can see anybody from the past who may have lived there. It all depends at what time of the day you look through it and the lighting conditions. Early morning is quite good for seeing figures. Not so easy to capture them on film however. It can be spooky right enough when one of the figures comes up to the lens quite close and peers back through at you. I suppose they must be looking into the future from their perspective.
I stayed for a week in this old house and I put my lens on the window and got some images from the past.
I stayed for a week in this old house and I put my lens on the window and got some images from the past.