mercy
i buy a HUGE jug of vinegar in a Chinese market up the road from our home and use it a lot!
keep some in a spray bottle in your bathroom, mixed w/a few drops of tea tree.
use it as an after shower spray instead of those rank chemically ones.
voila! no mould buildup on your tiles and shower head.
run it through your kettle or coffemaker - i do half vin/half water- to descale.
put a slug of it in the fabric softener compartment mixed w/some essential oil to freshen your clothes.