We've released an update which enables a bunch of Halloween content. This content will be live until the next patch on November 1st.
You'll find some new NPCs which drop all sorts of Halloween goodies, from graveyard fences to loot bags and coffins.
There are also some Halloween themed items for sale on the Rust Item Store, check them out Here
Note: If the strobe light is bothering you, you can press F1 and enter "strobelight.forceoff 1" in the console to ensure they remain off