Have you ever fantasized about having the power to blow things up with just a thought?
Uh, yeah, me neither. I'm just speaking hypothetically. I would never harbor such desires. Because that would be bad.
But if you do: good news! The Mind over Melon project uses an EEG to activate a CO2 blast into a hapless human head-like watermelon. Concentrate and it explodes. Watch a video at the link.