Target or Walmart usually have a great assortment of decorations for Halloween. You can get tombstones made from plastic or styrofoam to plant in the yard. There are battery powered hands to put in the candy bowl and a wide variety of decorations such as spider webs and spooky signs and window decorations to make it a great Halloween at your home.
Some good Halloween effects include blacklights, fog machines and spider webs. You can find creative ideas and make purchases at http://www.halloweeneffects.us/
If you are looking for more information on where can you find some good Halloween music, the best place to look is on blogcritics.org/music/article/ten-halloween-songs-that-arent-as/
For great Halloween lighting effects one always needs some black lights and some strobe lights, throw a little dry ice in the mix and it will be great. Here are more ideas: http://halloweenspecialeffects.com/halloween-lighting-effects-2/
You can find some Halloween craft for kids at Walmart, your local Halloween store, or at target. You can even make your own at your house for Halloween.
One can find many Halloween pranks for kids online. There are over thousands of videos on YouTube that show and describe some pranks that people can perform on Halloween.
I think that you can find a good amount of Halloween costumes at a Walmart, or CVS, near you. They are usually there around that particular holiday. You might most likely find some at other big retail stores as well.
Most grocery and drug stores sell Halloween candy. If you are interested in purchasing Halloween candy online, please see the following: www.candywarehouse.com/halloweencandy.html
You can find Halloween party ideas in websites such as www.halloweenpartyideas.org/; www.celebrations.com/halloween-party-ideas; and www.familymanagement.com/holidays/halloween/party.ideas.html
There are several online stores that sell a wide variety of Halloween costumes. Some of the most popular sites are buycostumes.com, costumesupercenter.com and anytimecostumes.com all these has a great selection for kids and adults.
The following website has some great Halloween Party ideas for old and young alike: http://www.halloweenpartyideas.org/ Here, you will find ideas for food, music, costumes, games and more. Another great site to check out for fun family Halloween party ideas is Disney Family Fun, at: http://familyfun.go.com/halloween/halloween-parties/
One can find Halloween recipes appropriate for kids in many different places. Some web pages with very good ideas are MyRecipes, Parents, BBC Good Food and Kraft Recipes.
You can get this fun scary item at www.orientaltrading.com. You can also get a great selection at Ebay. Try and get them early as the nearer it gets to Halloween the prices will increase.