For Floors:  just a small splash (1/4 cup) in 1/2 gallon-1 gallon of water will get any kind of floor sparkling clean.  Wood, laminate, tile, ceramic, slate, marble...this will clean them all.  Remember, this is CONCENTRATED so you only need a small splash!
 
For Laundry:  a little goes a LONG way!  Add 1-2 tbsp to the rinse cycle or to the fabric softener dispenser and your clothes will feel so soft.  1/2 gallon good for 64 loads.
 
For Dishes:  add a splash to some warm water and rinse hand-washed dishes in it for a spotless finish.