Put all marketplace assets into single folder
It can be a bit time-consuming to organize every asset pack you add to the project, but this will prevent littering your main folder list with dozens of folders rarely used folders. Consider moving every single marketplace asset to a single root folder, i.e. "ThirdParty".
Use built-in Developers folder for all junk
There's a special folder where every developer/machine got automatically created subfolder. It's designed for developers to simply keep their junk assets there.
- Assets from these folders don't appear in asset pickers. This prevents others from accidentally including junk in the production content.
- It's hidden by default, you can enable it via View Options of Content Browser. Check the "Show Developers Content" box.
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