Here are a few uses I did know about;
fasting dark colors-add a cup of vinegar to a first wash of new, dark colored clothes, helps to fast the overdye(a cup of salt works also)
in making your own "windex"-1 part each of; water, white vinegar and non-sudsing ammonia
fluffy rice-1 teaspoon of white vinegar in the water will give you white, fluffy rice
preventing the smell of cabbage from fumigating your house, add 1 teaspoon to water before adding cabbage
keeping acs from getting mold or bacteria growing in the collection pan or lines-pour 1 cup of boiling water and then 1 cup of vinegar into the line access, keeps ice from forming on the line(causes water backup in your house) and kills germs and mold.
Now for some uses that surprised me;
clean your john- pour vinegar into bowl, let sit 5 minutes, scrub off stains, then flush
rust cutter-put rusty or corroded bolts in some undiluted vinegar, then you should be able to work them free
grass killer-use half strength on any grass in sidewalks or driveways
freshen slightly wilted vegetables-soak in cold water and vinegar.