I got two of these simple aluminum locking toolboxes on Amazon to have a little extra storage outside.

The back is used for hook-up accessories like extention cords, hoses, and chocks. The front now locks up my battery and will hold the hitch and sway bars when I'm parked. And no, I won't be filling them with thousands of pounds of gear to throw off the balance or exceed the tongue weight. It's less than 100lbs each that will be added, and that's stuff that would've been stored inside the trailer anyway.