So try doing something for you and then something for them.
For You:
*I love using items that are naturally found around in nature for the season.
- Corn stalks, Hay bales, pumpkins, gourds, Indian corn, branches, leaves, apples, branches, pine cones...
*Burlap is also nice this year, and it can go with everything.
* I made this vase of flowers that I found in my yard, I snipped some of the mums and vines from the honey suckle and then the tops of the day lillies after the lillies fall off are a really nice shape.
*Another Hint would be to decorate for the season rather then the holiday. I do have a few Halloween decorations that I like but mostly I put out fall themed decorations so that I can leave them up a little longer to enjoy!
For the Kids:
* They love the window clings and you can find them for a dollar pretty easily at Wal-Mart or the Dollar store. Give them a page of those and it will keep them busy while you decorate the rest of the house.
*Give them some craft projects to do that they can hang up and then you can do new ones each year. - Search Pinterest for Halloween Crafts for Kids there are tons of ideas
This Year we made these pumpkins. We put pumpkin pie spice in the kids paint and then they painted the back of a paper plate. We let it dry and then they glued on shapes to make faces.
I found the idea on... Growing a Jeweled Rose...
http://www.growingajeweledrose.com/2012/09/fall-pumpkin-scented-painting-activity.html
Well this post is a little late, it's been in the works for a bit. :) So if you've already decorated you can also use these ideas for Harvest dinners or your thanksgiving center piece. Also, this will give you some ideas to think about when you are at estate sales or shopping after season sales. It is a great time to buy stuff for next year.
Happy Decorating!!!