And I finally decided to find the last two heads just now, and I found one, so I came to the forums to report that the sign was missing! D'oh! Ah well.
So basically, I built a new house about a month ago and I realised a few weeks ago that @bobandbunny's head was right behind a hill next to it . PleASe don'T rEMovE thEm!
Unfortunately the event is over, but we have a new scavenger hunt for different “stations” of blocks going on!! The information is on signs at easy spawn.
The heads are still there but you can't collect the heads, as I've said, bobandbunny's head is right by my new base but all there is now is a sign saying 'I'm not sure I agreed to this' or something along those lines