If you are taking your photography seriously, you're going to to be dealing with more gear than just your camera.
Even if you manage to keep your Gear Acquisition Syndrome in check, you're going to wind up with stuff that you need to find a place for in your bag or studio.
While camera bags do offer some ways to organize gear, such as dividers to create spots for lenses, cameras and other larger accessories, there are going to be smaller items that you just don't want rattling around loose in your bag.
Sometimes there are tiny pockets you can use for some accessories such as lens cleaning cloths and memory card holders, but their space is limited, especially if you're packing extra batteries or other accessories.
There's a solution you can find in the school-supply aisles of big-box, office supply or dollar stores that can help you put everything in its place and make your bag or studio a bit more orderly: Pencil boxes.
These plastic boxes that are typically used for holding pencils, pens, chalk, erasers and similar classroom sundries can be used to store or carry gear. I use two to corral and organize my gear.
I use one box for the audio gear I use when shooting video (recorder, a couple plug-in lavaliere microphones, a USB charger and cable, patch cord and earbuds), and the other contains the batteries I need for my camera, flash and recorder, as well as a battery adapter so I can use AA penlight batteries in one of my DSLRs.
I made labels for mine by typing up the names of the boxes' content category in a word-processing document and then used clear tape to put labels on each end of the box, so I know which one I'm grabbing regardless of how it got put back. If you have a label maker, either one that prints out the label on tape or the old fashioned ones that embossed each letter on a plastic tape, go for it.
This setup ensures the stuff doesn't fall out of my bag, and provides some protection in the bag. It also creates a bit of a modular setup, allowing me to make it easier to better customize my gear load for a specific situation. For example, I do the online broadcast of our church services, so I just take my audio kit from my bag, taking just what I need and leaving the rest at home.
The boxes can also be used to organize gear in your studio or storage space at home, avoiding a photographic junk drawer.
