A few different types of automotive light bulbs get popped with high voltage. Most were fine with the two MOT's in parallel giving out 2,100 volts and 1.5-2 amps. The halogen was seen in the first high voltage video and needed 4kv to initiate an arc, which had to wait for the arrival of the second MOT.

I still have a box full of stuff to pop, I'm just waiting for warm weather because I have to do it outside with the nasty smoke it will create.

MOT's are dangerous, and should not be used unless you have a full understanding of how to use them safely.