There are many different systems for labelling objects. At the simplest level, a blind person can put a rubber-band around her toothbrush to distinguish it from someone else's. At the most sophisticated, braille labels can be attached to each object. Colours can be distinguished in a number of ways. RNIB sells a set of differently shaped buttons which can be sown onto the inside of garments to indicate colour.
Some blind people sew tags on in different places to indicate colour.
A tag on the inside, left sleeve, for example, might indicate red. Using household items Using everyday objects can be much easier than it sounds. Filling a kettle is fairly simple once you have learnt a few simple techniques. Finding the tap and bringing the kettle up to it is relatively easy because the tap doesn't move. You may be able to judge the level of water in a kettle by its weight and the change in sound as it gets fuller.