"When am I gonna have time to make all this stuff?"
Well, the real "trick" when it comes to "treats" for your party, is to make what you can...and buy the rest! Let someone else do all the work, and you just add a few decorating touches...and it's gonna look fabulous! (And save you a lot of time!)
Here's a good example, this cake is so pretty, but on party day, I might not have the time to bake a cake, so why not buy a chocolate cake and just make some icing for piping, and decorate it!
This will give you more time to prepare your other ghastly goodies. Work smart, not hard!