Fight some ghosts in the middle of July
If you are a fan of Team Fortress 2's Halloween items, you won't have to worry about them going away at the end of the season. Valve announced that players will be able to use an "Eternaween server enchantment" to force a vote to allow Halloween items for two hours. This enhancement will be available all year year round, so get ready for some spooky times.
I love the Halloween stuff, and I think a lot of other Team Fortress 2 do too, so this is a nice surprise. I don't know how people will feel about randomly using spell books six months from now, but I'm sure it will be fun.