Assuming you are talking about cleaning the bathroom sink, counter, and toilet:
You will need 1-2 rags or paper towels to clean the surfaces. If you are using a cleaner, make sure to follow the instructions on how much to use. For example, if you are using vinegar as a cleaner, you will want to use 1 part vinegar to 2 parts water.
You will also need a brush for scrubbing the toilet. A toilet brush with bristles is best for getting rid of tough stains.
To clean the shower or tub, you will need a sponge or rag and some type of cleaner. You may also need a brush with stiff bristles to get rid of tough dirt and grime build up.