Wouldn't a Snow Globe prevent pilots from getting disoriented? Several times in aviation history a passenger aircraft has crashed just because the pilots were disoriented. They simply just did not understand what was the position of the aircraft that moment.

Wouldn't a Snow Globe prevent this?

There are 'earth' and 'snow'. Their position inside the glass bubble would give better clue of the position of the aircraft than current mechanisms.

One could also design a specified version for aircrafts. Maybe just bubble of glass filled with pebbles.

I think it would work brilliant as artificial horizon.

Has there ever been an experiment with 'snow bubble' as artificial horizon?
This doesn't work. A plane can be in arbitrary orientations while the the forces felt by everybody in the plane are directed straight at the floor. A famous example is Bob Hoover pouring tea while rolling a plane. If Bob Hoover's tea can't tell that it's being poured upwards, nor can your snowglobe.  Indeed, this is precisely why pilots become disoriented.