Boo Bash! 2022

Join us for Olympia's beloved fall costume party, Oct. 22-31

Boo Bash Oct. 22–31 sponsored by Hanson Motors

Boo Bash!

Dress up in your favorite costumes and bring your little ghosts, dinos, superheroes, and princesses to the Hands On Children’s Museum for a spooktacular good time. Enjoy Halloween-inspired fun and exciting activities without the fright.

Boo Bash Activities

Special event activities operate 9 a.m. – 4 p.m. Activities vary depending on the day of the week and may be added at any time. See the online event calendar for dates and times. Online reservations recommended. 

  • Navigate the spooky straw bale trail
  • Explore skeletons galore in the bone bonanza room
  • Decorate a mini pumpkin
  • Find long-lost gold and gems at the ghostly gold mine
  • Discover the science of food fungi and microscopic decomposers at moldy marvels
  • Make a mini ghost & fly it through the Airways Maze
  • Pound golf tees into pumpkins
  • Celebrate bats in the Art Studio with your own unique design
  • Build a haunted house and add it to the spooky town
  • Make a ghost puppet
  • Press, grind, and smash seeds and grain
  • Go on a scavenger hunt
  • Silkscreen a treat bag (for an additional fee)

Weekends Only

  • Press apples into cider
  • Watch exciting demos by Dr. Science
  • Join the costume parade


Sensory-Friendly Boo Bash

Special Boo Bash activities for families of children with sensory sensitivities will be available October 23 & 30 during our normal Sensory Friendly Hour (9-10 a.m.). A sensory friendly room is also available Saturdays and Sundays 10 a.m. – 4 p.m. during Boo Bash.

Activity Map

Download the Boo Bash activity map here

Get Tickets

Online reservations recommended to get priority check-in. Members receive expedited entry at the member check-in location. Pre-registered guests are guaranteed entry. Walk-ins will be accommodated on a space available basis only.

Member Reservations
General Admission
Sensory Friendly