I was raised catholic and went to a catholic primary school. At one point we had a class where we would visit the local catholic church once a week and the priest would explain things about how things worked in church.
On one such occasion he pointed out a red light near the altar and said that the light indicated that god was present in church. (Apparently it’s called a ‘sanctuary light’ in English). I spent an entire week trying to figure out how this god-detector worked. I had several designs worked out in my head, like it having an unreachable switch that could only be pressed by god himself.
The next week we arrived at church a little early and I caught the priest putting a candle in it and lighting it himself. That’s when I started to realize the whole thing was one big scam.
A bar in my city has an actual walk in fridge: https://devluchte.nl/over/