1 Oxgenitics Shower head/hose (Easy swap for the current one)
2 Extend-A-Shower Expanding Shower Rod - White Finish
(The included screws will hold it if no one pulls on the curtain otherwise use plastic anchors).
3 A 1.5v LED puck light. Remove one of the screws on the shower skylight and run the screw through the base of the puck light then re-install the screw. More light in the shower at night.
4 A small portable 110v heater (ideally less than 1300w) as the bathroom is not heated. Just watch what else is running or you will pop the breaker.