For a long time I've been enamored of building a Dutch Style tool box. It's a box made during colonial times. Once I got the plane and got it in the hangar I thought this would be a good opportunity. So I built it.
This next pic is the box opened. Two wooden slats slide down either side of the front and lock the box. The slats run through those locking slots at the top edge of the front panel:
The locking slats go through the gap between the drawer front and the drawer box locking that in as well:
If you cannot unlock the top you cannot remove the locking slats and get into the storage shelves and drawer.
It's on castors so it can be rolled around.
The big hose in back was for an old engine pre-heater. I have a Reiff system now.
It's plenty large enough for the Hangar and has a decent set of tools for the kinds of small stuff I do in the hangar.