All Fluff -- and Loving It Somerville can be proud of so much, but Archibald Query's crazy marshmallow concoction is something to celebrate. That's why we have "What the Fluff?" Fesstival. Fluffernutter may be the guest of honor this year, but you can stuff your face with all sorts of reasonably-priced treats or enjoy Fluff fun 'n games or enjoy the entertainment including Jordan Valentine & the Sunday Saints, Rex Complex, Los Sugar Kings, and The Flufferettes. Union Square Plaza, Somerville. 4 p.m. to 6 p.m. Free.

Google to Give Away WiFi at Logan, Elsewhere
Last Thursday, the soft light of dusk lingered in the theatre at the Institute for Contemporary Arts, where floor-to-ceiling windows let you see the Boston Harbor from two sides. Yachts, Harbor Cruisers, and sailboats passed in the distance, backgrounded by the Logan airport control tower on one side and the Custom House clock tower on the other. In the middle of the room, on an oriental rug spread across the hardwood floor, a set of five instruments sat bunched.