Recommendation for a resistive throttle?

I'm looking for a resistive (no hall sensor) throttle for a brushless motor. It needs to be self-returning to 0. Ideally one that can be mounted on handlebars.

I'm seeing a lot of mentions of them in the forum, but no links to any, and I can't find any on Google.

Does anyone have any tips?

The Magura or Domino are the primary ones referenced on the forum, and there's even been threads in the sale section for at least the Domino (dont' know if they're still active).

But there's a lot of them out there. Some google searches just in the "shopping" category, specifically for grip throttles (there are probably thumb or half grip versions, too, if you don't want a full-grip type):

https://www.google.com/search?q=potentiometer+grip+throttle&btnG=Search&newwindow=1&tbm=isch

https://www.google.com/search?q=5k+grip+throttle&btnG=Search&newwindow=1&tbm=isch

https://www.google.com/search?q=resistive+grip+throttle&btnG=Search&newwindow=1&tbm=isch

Or you can use cable-operated "pot box" units, and use a cable throttle from a moped, motorcycle, ATV, etc:

https://www.google.com/search?q=pot+box+throttle&btnG=Search&newwindow=1&tbm=isch

EV Warrior thumb throttles were common in days of yore. Those were 0-5k throttles. There are still a few in circulation.