1. Put all of your bathroom cleaning supplies in one container.
2. And fill a scrubby wand with your favorite shower cleaner to keep in your shower all the time.
3. Use a rubber band to tie plastic bags filled with cleaning solution over your faucets and shower head.
You can either use white vinegar, like in this tutorial, or use a heavy duty de-scaler, like in this tutorial — it will depend on your preferences and on how much buildup you're fighting.