Here's a handy guide to all the games in the Halloween Olympics PPT (full text included in Word Document):

Halloween Olympics - Game List
(in order by the hyperlink number in the PPT)

1)   Skeleton Dice Game - Team members take turns to throw the dice to determine a body part to draw on the whiteboard. First finished wins.
Materials:  Die/dice, whiteboard, board marker(s)
2)   Eyeball Toss - 3+ students per team try to throw the eyeball into one or more buckets/boxes/ baskets/etc.
Materials:  Foam balls or ping-pong balls with eyeballs drawn, painted or taped on; bucket(s) or whatever you want to use as a goal
3)   Thriller Dance Contest - 1+ student per team comes to the front and tries to dance like a zombie to the Michael Jackson song
Materials: YouTube video (check the link in the PPT)
4)   What long fingernails! - One boy and one girl from each team competes, give points for each winner
Materials:  None (I tried using a ruler to measure, but it didn’t help, so just eyeball it)
5)   Monster Drawing - All students try to draw a monster the teacher describes (or shows a picture of for low levels) ON THEIR HEAD
Materials:  White paper + students’ textbooks AND/OR students’ notebooks, Frankenstein example picture (included in ZIP file) OR other simple monster face
6)   Witch Hat Ring Toss - 3+ students per team try to throw a ring over the witch hat
Materials:  Ring toss game + witch hat, or make your own using heavy black paper
7)   Eyeball Relay - 3+ students per team pass the eyeball using spoons
Materials:  Foam balls or ping-pong balls (from Game #2), spoons
8)   Black Cat and Kittens Race - 3+ students per team; 1 is the cat and the rest are kittens.  Cat puts hands on the floor and arches back.  Kittens crawl under.  Fastest finished wins.  (Probably better one team at a time, unless you have a really big classroom.)
Materials (optional): Cat ears for the “cats,” stopwatch/timer app on your phone
9)   Jack-o-Lantern Race - (sort of misnamed; it’s not a race) 5+ students per team pass a balloon using only their elbows (hands on ears)
Materials:  Orange balloons w/ jack-o-lantern faces drawn or taped on
10)   Spider Web Toss Game - 3 students per team make a big circle (team members should be next to each other).  Throw the ball of yarn to make a web.  Get points when they throw or catch successfully.
Materials:  Ball of yarn + [optional] number cards
11)   Dracula’s Staring Contest - 1 student per team tries to stare down the other student(s).
Materials:  None
12)   Halloween Limbo! - 1+ student per team 
Materials:  Limbo stick (broom, mop, umbrella, or string held by 2 teachers) + [optional] spooky music
13)   What a tall skeleton! - 1 boy and 1 girl per team.  Give points for the tallest of each.
Materials (optional):  Jack Skellington and Sally masks (included in ZIP file) for the winners to wear in order to get the points
14)   Halloween Hangman - Play hangman with spooky Halloween-themed words
Materials:  White board and marker
15)   Witch’s Broom Relay - 3+ students per team have a relay race while balancing a broom on their hand [***EDIT: I recommend changing this from a relay race to just see who can balance the broom longest! (1 student per team)]
Materials:  Brooms
16)   Pin the Spider on the Web - 1 or 2 students per team try to pin a magnetic spider to a web drawn on the whiteboard.  Closest to center wins.
Materials:  Spiders printed from “Spider Fishing PPT” (included in ZIP file, see Game #20), magnetic tape (or tape loops)
17)   Make the Haunted House Game - 1 or 2 students per team. One student cuts out the windows and door. 2nd student picks them up by sucking through a straw and places them on the picture.
Materials:  Print out the Haunted House Game PPT (included in ZIP file), straws
18)   Flying Ghost Contest - 1-3 students per team try to keep a tissue paper ghost flying the longest by blowing (no touching!)
Materials:  Tissues (Kleenex) with ghost faces drawn on in black marker
19)   What a scary face! - 1 or 2 students per team make a scary face, teachers choose the winner
Materials: None (optional - you can use the camera on your phone to help compare if they won’t all make a face at the same time)
20)   Spider Fishing - 3+ students per team try to catch a magnetic spider using a fishing pole, get the points on the spider
Materials:  Print and laminate the spiders (and points) from the Spider Fishing PPT.  Make a fishing pole using chopsticks, yarn, a strong magnet, and tape.
21)   What long hair! - 1 boy and 1 girl per team.  Measure girls’ hair down from top of head.  Measure boys’ hair by holding the longest piece straight up.
Materials:  Tape measure (soft) or yarn and a ruler

  this is AMAZING!!! I'm using so many of these this year! I also love the ppt template!
I'm going to try and incorporate pumpkin carving as well, though I don't know how much I want to trust my kids with knives...
Thanks for posting this!! (I know it was a while ago, but still.)

Kudos, Robotka.  I'll use this the next two weeks in my afterschool classes.
Thank you!