We have been going to our friends' HP for past three years, the first time the kids were about 4-5 years old. The mom does a great job, very organinzed but with a laid back feeling. Here is what she does for the kids...
1) cupcake decorating. She bakes cupcakes, spreads out a blanket in her back yard, and puts out sprinkles, candy corn, canned frostings, etc. She spreads the frosting, and let's the kids have at it.
2) some kind of craft. She buys from Oriental Trading, and one year it was Halloween beads on a string, last year it was a foam bat..really cute, easy with a little help. (Yes, GC&S-glue dots are the way to go!)
3) Ghost pinata. nuff said...
4) Hay ride. The dad breaks up a bale of hay on the garden trailer and pulls it around the yard with the riding lawn mower-four or five kids at a time.
5) Treasure hunt. She divides the kids into teams, writes easy instructions on pieces of paper and puts them around the yard....ex. Jump up and down ten times, then run to the swingset for your next instruction. The end of the line is a large plastic cauldron with lots of prizes in it...enough for each child to get one of each...again-Oriental Trading Company /Sam's
6)She puts out a fun spread of Halloween Treats...Pizza for everyone, a Pudding topped cake with tombstones (Pepperidge Farm Milano cookies) and Cool Whip ghosts
She gets either empty gift bags or last year she got little Halloween themed Chinese carry out boxes to put all their stuff in as they accumulate it.
Also alot of the time is spent just letting the kids run around in the backyard..
She also makes these really cute "suckers" that she puts out for the kids to take home. She takes a Moon Pie and shoves a stick into the side of it like a sucker. Then she uses frosting as glue and puts different cake decorations on it, candy corn, sprinkles. Then she wraps it in a clear cellophane candy bag and arranges them in a vase w/styrofoam like a bouquet of flowers.
This is the highlight of our Halloween season, we have a ball. takes about 3 hours...
And someone made the most delicious adult punch last year that made it especially fun for the adults.
At my DSs' cubscout party they had a long boxlike structure (about 8 feet long, 1 foot high, 1 foot long-could have been several boxes) covered with blankets/towels. There were holes cut into the sides and they kids would reach in the holes into a bowl of "stuff" they couldn't see, and have to guess what it was. They had "eyeballs" (peeled grapes) "entrails" (spagetti) "brain" (cauliflower) "hair" (wig) and the last one had a real hand that belonged to someone sitting under the table!!
Edited to add...we do the creepy hands w/popcorn, too. You use "food Service" gloves, the thin clear ones, and put a candy corn pointed outward into each finger..that is the fingernail. Fill with white popped popcorn till full, tie off with a ribbon. put one of those spider rings on the ring finger.. The kids love these..