I use baking soda and vinegar to wash the tiles in my shower. It gets rid of the hard water stain and soap scum instantly after scrubbing.
I use a combination of vinegar and baking soda to unclog my tub drain. Put 1/2 cup of baking soda down the drain first, then 1/2 cup of vinegar and then cover the drain with a small glass dish and let it sit over night! In the morning, run hot water down the drain and the clog is broken up and gone! Works like a charm!
For ring around the tub I sprinkle baking soda on a rag/sponge and spray tub with vinegar. Don't need to scrub much at all.
I use a cup of baking soda and a cup of white vinegar to clean out my garbage disposal.
In order to deodorize my garbage disposal, I pour 1/4 to 1/2 cup of baking soda down and then follow with 1/2 cup of vinegar. I let is sit and bubble for a few minutes and then turn on the water and run the disposal. It really works!!