Hello,
For example, i created some folders in my inventory:
- Clothes
- My Builds
- Home...
You can create subfolder under Clothes: Mesh/ TMP...
And, for example, when i buy Textures, i always move them in the textures Folder...
Also, there is the search function in the inventory (at the top of the inventory). So if you choose the good names of your folders: it will be easy to find your items...
Also, sometimes it's a good idea to rename some items when they are modify...