do they make rerailers for N scale that don’t look like crossings???
Not that I’ve seen. They do make portable ramps for putting cars on the rails, if you are just wanting an easier way to get them from a box to the layout.
Other then the hand held ramps that Mark mentioed, I don’t know of any. You could, I suppose, do the guard rails on a bridge so that it could do that function and that would be a well diguised way of doing it. You would have to have close tolerences and use the same code of rail for the guard rail as you do for the main track, i.e., code 55 track = code55 guard rails. Normally the guard rails are the next code down from the track, i.e., code 55 track = code 40 guard rails.
I just use Atlas reraliers. but they look like grade crossings.