That tuft link above is just about exactly what I have. But branded "Jeep". I guess great minds post at the same time.
I wouldn’t be surprised if things that weren’t at all valuable even went missing. Kids are always looking to do dumb things. Swear someone swiped one of my dogs toys from the back seats not all that long ago, dog slobber and all.The bolt in lock boxes are a great idea, but a better idea, do not leave anything valuable in the Jeep. A determined thief will see a locked box as a gold mine.
The Add-A-Trunk! I have one of those too. I use it to store things like groceries when I have the top off.My Rubi had a Jeep branded security box in it when I got it. Heavy plastic that screws into the sides from the inside. It fits behind the back seat and is secure when you lock the tailgate. Install takes less than 5 minutes. Remove takes the same.