An LFO for my DAW?

Oftentimes in Studio One I find myself tweaking FX knobs and thinking “Gee, I wish I had an LFO to send to this right now…” Yeah, I can make automation curves, but those are too time-consuming and require too much commitment. I decide I want it to be faster? Gotta redo the automation curve. I decide I want it to be a sine, not a triangle? Gotta redo the automation curve. Etc.

I was looking at Xfer’s LFO tool but that seems a bit overkill for what I need.

Anyone know of something? Hopefully it’s easy to use, too? Like I just open it up and it sees what the last knob I twisted was and I route it to that?