Except for the school party, I hated it when I was a kid. Back in the 60's and early 70's my mom would go to the dime store and buy those costumes in a box. We would try to get there early before all the good ones were gone. There was be a mask with an elastic band to go around your head. Most of the time the band would break before we even started trick or treating. Then there was the one piece, multipurpose, plastic sheath that covered us from shoulders to knees - it had a picture drawn on it of whatever it was that you were supposed to be. The witch would have a witches dress drawn on it, the werewolf would have a dog on it and of course the doctor would have a doctor's labcoat complete with a stethoscope on it.
Those costumes were pretty terrible and to make matters worse my mom would make us put them on over our coats because she didn't want us to catch a cold. We looked like colorful Goodyear blimps running around the neighborhood getting a bunch of second rate candy from all the neighbors. The Clark's always gave us Clark bars, the Flynn's would give out apples (every kid's dream). It was a good thing that I liked smarties (we used to use them for pills when we played doctor) because we had a plastic pumpkin full of them.
The school party was pretty cool. We would have candy and cupcakes with candy corn decorations. Usually we would even get one of those tiny little single serving ice creams that were only partly melted. Of course you got the little wooden spatula to eat it with. We would make Halloween pictures and play games. Then every class would tour all the other classes in the Halloween costume parade. There would be the vote for best costume every year and the same kids would win every year. You know the ones, their mothers would take the time to painstakingly sew a perfect costume for them and even hold them out of school in the morning so they could show up in the perfect Halloween costume for the party.
When I got a little older (5th or 6th grade) I started putting together my own costume. I had a long dress with paisley's on it. It was perfect for a gypsy dress. With a little added jewelry and a colorful scarf, it was actually a pretty good costume. I also turned it into the "Carol Burnette Cleaning Lady Costume". That one was easy. I just put on the dress. Smudged my cheeks with a little make up and grabbed a bottle of window cleaner and a rag - viola!