Halloween // any advice on how to easily decorate for Halloween?

I've never actually gotten to decorate for Halloween but we'll have our own house this October. I'll also be extremely pregnant in October so I'll have little energy and I've already been told not to lift heavy things. I absolutely LOVE Halloween though. Our daughter will be 2 so she'll be able to pick her own costume and we'll probably go trick or treating as well. I'd like to decorate our house up real nice and spoopy but I don't know where to begin. I want to do more than just some pumpkins and signs but I also don't want to go overboard and stress myself out or possibly hurt my body by pushing myself too hard. I did that with my last pregnancy and it absolutely sucked.