I have seen many products like this
for JK's but can't seem to find any for a TJ? That same company makes one but it's the only one I've seen and haven't seen any write ups on it for a TJ
I have also seen other varieties with the ability to stow cargo (an ax, shovel etc) on the underside of the table....sweet idea and good use of space IMO
I'm not opposed to making my own but wouldn't mind seeing some examples of one on a TJ before I start going down that road.