Eliminate the uncertainty of where things belong.
Choose a home for each item, and make it a habit to return it to its home after use.
Not sure where to put it? Store it close to where you use it. Example: I keep the cat food in a cabinet near the cat's food & water bowls.
Still not sure where to put it? Don't sweat it. Just put it somewhere, and see how that works. If you decide the home you've chosen doesn't work, you can always change it.
Keep all items of the same type in the same place. Example: There's only one place where batteries live in my house: a certain kitchen drawer.
If you live with others, designate a storage place for each person. Try to focus each person's storage in one spot, such as a closet or cabinet. Avoid having numerous storage spaces throughout the house (for example, a situation where Dad's socks and underwear live in the bathroom, his shirts in a closet, and his pants in a dresser in a different room).
Reserve "prime real estate" locations for everyday, frequently used items. Example: My coffee machine lives on the counter but my waffle maker is stored in a cabinet.
Make it easy to put things back.
Store items in a way that makes them easy to put away. (Don't worry about making things easy to get out. When you need them, you will get them out.)
Have the simplest system possible. Avoid spending lots of money on clever-looking "storage solutions". Not everything needs to be in a bin or a container. As I said in a previous post, containers don’t make you organized. For things that do need to be containerized, try to use a box, bin or basket you already have.
Notice what’s already working in your home, and build on it. Example: Do you file-fold your T-shirts in a drawer? Try doing the same with your dish towels.