Valve spring compressor?

I had a guy fab me up a tool eons ago that used a large C-clamp. It compressed the springs enough to remove the checks. I think I still have the C-clamp somewhere, but the tool is long gone.
 
Do you know if there’s any motorcycle specific ones that work? I’m sure the Triumph one is expensive.
I bought one off amazon a few years ago, nothing spectacular and works fine. Probably cost $20 - $30. It's completely different from the conventional automotive ones. It's strong enough to replace the springs that came with cams and kit from Neville Lush.
 
I use the ones you strike or push on, like these kind. Also have used a deep well socket with a heavy piece of plastic covering end to push keepers in place.
 

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It works on the same principle as automotive spring compressor, just not as heavy duty.