Singularity mine
From Wookieepedia, the Star Wars wiki.
The singularity mine was an interesting bio-creation of Yuuzhan Vong origin adapted for 'standard' warfare. They were essentially a smaller relative of the dovin basals hidden in a shell-like explosive container and worked on the same principle as they created small black holes that sucked and obliterated a target that came near its vicinity. What made them all the more dangerous was that, at a glance, one could not even notice any of the effects being generated by the mine until a person stepped near it.
