One thing you could do is make the desk a roller so it can be moved as needed.
I have a old sunpro cabinet I am turning into a fabrication table to hold my drill press, vice, and grinder. Plus a area to weld parts. It holds alot, and is versatile.
A few years ago I had one of those jobsite bins that had shelves inside, and I used as a movable storage. I was desk sized, and held alot. I traded it for something as a friend really wanted it. He cleaned it up, and still loves it. Plus in a pitch it could just be left outside as it was lockable. I need to get another.
This model.
https://www.knaack.com/products/jobs...PianoSeries/79
Not sure how much extra room you have, but I could roll mine in or out in a minute. Efecctively doubling my small stuff storage.