I have personally observed together with 2 more friends an unknown aerial phenomenon that was an object with shape of coffe coup filled with lights with many colors almost like a party light show, all those lights where looking like they are inside this flying object. This object was hoovering for some time at around 100-200 meters altitude then very rapidly was changing it's position and again keep hoovering, that was going on for about an hour. It was less than 1km distance from us and it was big as a one story house so it was very easy and clear to see it. The way it was moving and it's speed was nothing to compare with our modern aviation technologies atleast with what we the public know about. When we saw it it was so unusual experience that we've got goose bumps, it was definitelly a scarry thing because of the unknown but we kept our position and observe it until it disappeared like a switch off in the mid air, not fly away.
On other hand a few years later I was involved in executing a UFO prank by using RC Heli with light wires installed on it. At that time the multirotor drones where not so popular in the public as they are today, it was 2010. After the prank when we spoke with the ufologist that we have pranked, he was convinced that this is a ufo and it was a technology that doesn't exist on the earth. At the same time that technology was sitting in the trunk of my car
Human mind is very subjective and one can see what he believe in rather than what it actually is, I understand that. Anyway I still believe that what I've observed with my friends was a real one because of the speed it had, it was moving from position to position with super sonic speed but without emitting any sound and there where no inertia when it was reaching it's new hoovering position, it was simply locked in place.
I could take a look as well if you pm me the link.