Family Friendly halloween party?

Last year, I threw a huge adults only Halloween party (Carnival of Carnage). This year, the kids want in on the Halloween party too ( and to be honest, I'm ready for a more responsible type of party). Last year's decorations included lots of blood and gore. This year, I need to scale it back. Any thoughts on how to still throw a great party and have great decorations while keeping it family friendly (ages newborn-adult)? I want it to be still really cool for adults and not scare the kids. Plus I live in a townhouse now so the scale of my decorations has changed a bit. Any tips would be appreciated !