I found a couple of these little gremlins on my journey along the High line yesterday afternoon. I assume that they are new as I could find no reference to them anywhere on the web. Don't be scared folks, these are not actual Lite Brite boards that freaked out of Boston for whatever reason a year and a half ago, rather they are simple tile mosaics that will harm nobody, at least I think. Perhaps they are just an artistic tribute to our mass paranoia.
The Great Lite Brite Boston Scare (Wikipedia)