From the perspective of geomantic omen, can I put a safe next to the bedside table? The direction of the bed is Ji.

There is no need to be linked to feng shui, it doesn't matter. It is mainly the spaciousness of the place where you put the bed, bedside table and safe that determines the last words. You don't have to worry about any feng shui problems. It's not bad to link daily chores with feng shui problems, and you can't live.