I don't often clean my own toilet, I have someone to do that for me but the idea of putting a brush back into its holder with gunge on sounds revolting.
The brush and the container are cleaned along with the rest of thet bathroom.
Tips:
Put a disposable nappy into a hanging basket between the shell and the soil. It will hold water (as do those gel pearls).
When hammering a nail into plaster, put the nail through a strip of cardboard first, that will hold it and you don't hit your fingers.
If you use sipper-top water bottles, bleach or use sterilising tablets/powder to clean them every 2 days in warm weather. Tap water can be made sweet by putting it into a jug (cover with a clean cloth) and letting the chemicals evaporate.
Never buy stainless steel clothes pegs from 'Innovations' - they burn you in hot weather
A tight lid on a jar can be loosened by dribbling hottish water over it first.
Always rinse the bowl in which you've beaten eggs, in cold water immediately afterwards.
Stains in vases and other narrow recptacles can be removed by putting dry rice into the bottom with a little washing up liquid and warm water. Or vinegar and bicar, or bleach if you use it. Swirl round and use the handle of a wooden spoon for really stubborn marks.
Wooden spoons should be sterilised every week, they harbour lots of bacteria.
If you use a PC and keyboard. When everything is turned off, clean the latter by holding it upside down and tapping firmly onto a cloth. The keys and between them can be cleaned with a damp but not wet cotton bud dipped in methylated spirtis, or nail remover.
If you lack space in the kitchen as I do and need to stack pans one inside the other, use a piece of kitchen paper between each pan, especially the non-stick ones. Always put non-stick pans to soak before wiping with a cloth and then rinsing. As they get less non-stick, use a no-scratch scourer on stubborn food.
Invest in bowls or dishes with big handles so anything cooked in the microwave does not have to be lifted out precariously with an oven glove or cloth. Food can then be decanted into a serving dish.