Well that would depend what you mean, many items within the household have gold components such as your mobile phone and other electronic devices that you may have scattered around. Mostly gold is found within the wires but other components may be made up of gold as well. If you are asking about items entirely made up of gold, your best bet would be jewelery and possibly expensive ornaments (but its not probable that you'll have a solid gold ornament stashed somewhere in your house :P). Either way, many of the gold items in your house will be either easily identifiable or stuck inside some electrical item.
soaps and detergents are made of boron
Your new flat-screen digital TV.
Usually jewelry obviously, but some expensive lamps, and tables may as well.
Any household items contain technetium.
Any household items contain chlorophyll.
toothpaste
bowls
Batteries.
Vinegar
bowls
swords knives
soaps and detergents are made of boron
Apparently there is a way to test using honey if your piece turns green when placed in it, it is gold
computers and fridge magnets
You can use a magnet to test if the piece of "gold" is magnetic or not. Gold is not magnetic, so if it is attracted then it is not real.
compassesmagnets to hold cabnets shut
Ones that have a wonderful little stickers on them that say "Made In Russia"