Your cabin steward can provide more hangers if needed. Don't pack them from home. There is probably only one outlet accessible in the cabin dressing area & one in the bathroom for an electric shaver. The outlet on the dressing table can be used to charge batteries but I found that my wife's curling iron needed a short extension cord because the outlet is close to the table & the curling iron points in the wrong direction. Bungee cords ? Maybe to stretch across the room to hang a bathing suit to dry out.
