I'm now adding Toggle Death Spikes to Inanimate Insanity Miracles 0.0.1, so I don't have to wait until BFDI: Branches and/or Barfy's Adventure adds that feature.

I put them in the same image as "On Off Spikes.png" (Now renamed to "Toggle Spikes.png")
(Above in the image are the regular toggle spikes, and below are the toggle death spikes)