If you are trying to do it all for Halloween and want to stay on track with your budget-Try your local Dollar Store first!
Dollar Store Costume Ideas-
Ninja Vest $1
Ninja Nunchucks $1
Ninja Stars Pack $1
Ninja Mask $1
=$4 and you just need to add these accessories to black pants and a black shirt which you may have already, or can borrow from someone else!
#2 Cowboy or Cowgirl
Wear jeans and a T-Shirt or Flannel Shirt
Cowboy Hat $1 (They had black, brown, pink, and purple)
Cowboy/Cowgirl Vest $1
Cowboy Accessory Pack with Badge and Gun $1
Tiara and Wand Set $1
Jewelry Pack with Necklaces and Bracelet $1
Just add to a dress your child already has!
I also found Super Hero Reusable Bags for $1 for them to carry Trick or Treating (that can be used over and over again!).
There was also a great selection of NON CANDY items to giveaway. Pencils, Bubbles, frisbees, etc.
If you are having a party for Halloween-they had LOTS of awesome decorations, silverware, plates, tablecloths, bowls, etc that would make it very easy to stay on budget for a great party!