Artifact ID Day is a parade of people bringing in cool, weird stuff from their homes to be identified by the Burke Museum’s experts. There are alien objects of all kinds: ancient tools, mysterious stone sculptures, woven grass dolls, cups made from walrus tusks. (I’ve got an heirloom snake skin from Pakistan—cobra?—I’ve been meaning to bring in.) Bring a thing, or just hang out and watch the action. Pro tip: It helps if you can explain where and when the object was found. (Burke Museum, UW Campus,, 1–3:30 pm, $10 museum admission)