Anything like this available?

Not that I'm aware of, though the Influence Force power is pretty close if you want to develop mechanics for it. Maybe a device that allows you to use social skills opposed by Discipline?

In my opinion, that's the problem with it. Even if said item was ridiculously expensive, you can't make it as effective as Influence, or you're messing with game balance. If it's less-effective, then it's probably not going to accomplish what you want. This might be better accomplished narratively rather than through game-mechanics.

What is it?

Mind control device from the Clone Wars series.

I prefer the hypnotoad.

Me too

All...hail...the...Hypnotoad...

But in response to the question. I do remember this being used by Cad. And I'm not sure if it did work similar to the Control 'Jedi mind trick' upgrade for Influence, if that would actually unbalance the game. A similar argument could be made with jet packs (or jet boots in the case of Cad) and Enhanced Leap, a piece of equipment that could effectively allow similar ability. After-all, the reason Cad Bane had all/most of his gear was to counter or keep up with those who had Force abilities...

Though, I would say that unlike Influence in which only a PC/Nemesis (or other important NPC) can resist it, a Hypnogazer would always require an Opposed check against the target, whether a Minion or whatever.

The benefit of Force Powers over gear is that you generally always have access to them and they're really difficult to take away, yes it costs XP to acquire and the requirement to generate Force Points, but still a small price to pay to have such ability at hand when you need it.