Looking for an indoor, low-sugar Halloween option for your kiddos this year? 2018 marks Seattle Children’s Museum’s 7th annual Costume Carnival and you don’t want to miss it.

During this special event, the Museum’s staff will transform the exhibits into a Halloween-themed version, with additional activities, programs and sweet treats. Kids can decorate a treat bag, participate in a costume parade, dissect owl pellets, play with polymer potions, make slime and feel the magic with Luna the Wizard (both days at 1:30 p.m.).

Note: This year’s event will take place on Oct. 27 & 28.