Is there a way to show a connected toy's activity visually?

I’m trying to make it so that my viewers can see how strong the vibration is at any given point on the screen while I’m streaming, but lovense does not seem to have a tool for that anywhere.

Not in Lovense Connect. The Intiface Game Haptics Router has a visualizer that is active while it is hooked to a process; if you can use GHR for your game, you could switch to that tab in the GHR UI and capture it as an OBS window, just make sure to crop it down to the visualizer.