How about a Halloween themed scavenger hunt? Gets people moving and can be inexpensive and fun. "Find Mr. Jones Bones" (you can buy a bag of bones in about any store with halloween stuff for pretty cheap and can be hidden under leaves or anywhere you choose. Don't know how big of an area you have to be used but if you have a small neighborhood you could ask neighbors if they will let you use their yards too to hide things in and if you're lucky, some might be willing to dress up and jump out and scare people when they are searching) "Find the face of Halloween" - this could be a jack o lantern or even a cheap skull. Or it could be "Find the headless horseman's head (a jack o lantern) Find the witch's pot (a small cauldron and you can get those in Dollar Tree or Dollar General, etc) They can work in teams or couples, depending on how many guests you have. And the one (or more than one) that finds the most, gets a halloween prize - a pumpkin? A skull? You can find inexpensive items in the Dollar Tree you could use.
You could also have a pumpkin carving contest and let everyone carve their own pumpkin. Depending on where you live if a real pumpkin is expensive or not but you can usually find small ones that aren't very expensive (at least where I live) Or small cheap foam ones from the Dollar Tree that they decorate with markers or paint/yarn, etc etc
I'd dump the DJ though too and burn your own CD's or use the money to buy some halloween music, like Thriller, Monster Mash, etc.
You could have apple bobbing in a different way so nobody messes up hair/make up by running string through the apple and hanging from the rafters in the garage. Trying to get an apple with your hands behind your back while it is swaying up by your head isn't an easy task!
If you do a google search you can find downloadable/printable pictures that you can blindfold the guests and do a different take on the old "pin the tail on the donkey" idea but use a skull for a head on a skeleton, or a tail for a black cat, or a witch's hat, etc.
Again, cheap prizes from the Dollar Tree for the winner.
Let your neighbors know the day/time of the party and ask them to help be the judges of a costume contest. Do a costume parade and the judges are the neighbors. Give a small Best Costume trophy to the winner or winners of each category. You can make the trophy yourself from a dollar skull or any other halloween item in the Dollar Tree. You can print "Best Costume" or "Best Movie Character" or whatever from your printer and use some mod podge and put it on the trophy. After printing, tear the paper and "age" it with tea, etc if you wish.
Scarey movies can be rented pretty cheaply and refreshments of popcorn with red string licorce in it or gummy spiders, etc or even halloween m&m's can be fun and cheap to do.
Just a few ideas off the top of my head. Hope it either helps or makes you think of something else to do.
