Do you make your own Halloween Costumes? You might be amazed by just how simple some of them can be to make. You can save a ton of money doing it yourself. Those ready to wear costumes you find at the store tend to be cheaply made, yet not cheaply priced. So, even if you don't save a ton, you should still save some, and at the same time end up with better quality. I used to always make costumes for my kids when they were little. For the cost of just one ready to wear item, I could get enough stuff to make Halloween costumes for all four of my kids.