Tortilla chips and salsa, or Akmak crackers and hummus. Beer if asked to bring drinks. 25, PNW US.
Am I the only one who would ask for clarification?
If the host didn’t clarify, I’d get some baby carrots, celery, cucumber, broccoli, cheese, crackers, and a couple types of dip and make up a reasonably healthy platter.
Midwest US. 30’s.
Just for variety . . . cupcakes and chocolate-dipped strawberries.
U.S., 67
Except that nobody expects you to bring drink if you yourself don’t drink. I sometimes take along my own diet coke though 
Even though I wasn’t actually asked to bring anything I took cherries to a barbecue the other week.
ETA: if I want to impress I bring home made dips.