If you've picked up the Konova Slider and looking for a cheap way to mount your camera directly (no fluid head) this 3/8" to 1/4" male thread adapter is exactly what you need. The Konova only comes with a 3/8" stud and if you can't get around to a heavy duty fluid head, this could suffice temporarily. The only problem I can see though is being able to position the camera angle.
If angle is of importance and you're not the type to do much panning while sliding, the Opteka is a pretty heavy duty ball head on the cheap. Unlike tiny ball heads, this one shouldn't have the same problems with vibration.