"Hoarding in the Digital Age" lecture Scanners bookstore, 312 Valencia, SF. www.scannersproject.com . 6:30 p.m., free. Renaissance woman Rebecca Falkoff is a Ph.D. candidate in Italian studies at UC Berkeley, but today she's talking about her other passion: hoarding. Falkoff examines hoarding as a symptom of anxiety in our transient digital age in today's lecture at flash new pop-up print bookshop Scanners.
"Jack Davis' Penis Show" Good Vibrations, 1620 Polk, SF. (415) 345-0400, www.goodvibes.com . 6-8 p.m., free. Crochet artist Jack Davis finds inspiration below the belt. The man has been creating foreskinned wonders (they come with drawstrings and double as nifty sacks!) for decades, and his phallic work is a sight to be seen. Look it up and down at this free reception at your friendly neighborhood sex shop Good Vibrations.
"A Simple Revolution" Group Reading with Judy Grahn Francis of Assissi, 145 Guerrero, SF. www.auntlute.com . 5:30 p.m., free. Foundational activist, author, and scholar Judy Grahn revisits the 1960s roots of San Francisco's lesbian community along with four other reading panelists. A Q and A with the revolutionary ladies will follow.
Green Empowerment Party and Discussion Luminalt Warehouse, 1320 Potrero, SF. (415) 641-4000. www.greenempowerment.org . 6:30-9 p.m., free with RSVP to firstname.lastname@example.org . Bike, bus, walk, or Prius down to the Mission for a casual discussion of renewable energy's potential across the world. Meet fellow solar enthusiasts, check out Luminalt's organic garden, and hear about some recent work in the Philippines before walking out a little greener.
"2 Blocks of Art" art walk Sixth St. between Market and Howard, SF. www.urbansolutionssf.org . 4-8 p.m., free. Hobnob with upwards of 50 local artists and musicians in some nontraditional spots – a laundromat, optometry office, and of course, the sidewalk. Maybe not the best time to tackle that load of laundry, but definitely a good one to wander out in search of cheap eats and eye-pleasing sights.
Potrero Hill Festival 20th St. between Wisconsin and Missouri, SF. www.potrerofestival.com . 1 a.m.-4:30 p.m., free. Ah, to be young and have unquestioned admittance to bouncy castles. No matter. One of our favorite neighborhood festivals – now in its 21st year – holds plenty for those lucky tykes as well as anyone deemed too old for petting zoos. Bring your little one, find a goat, and wander through the food, music, and art.
Half Moon Bay Art & Pumpkin Festival Main, Half Moon Bay. www.miramarevents.com . Also Sun/16. 9 a.m.-5 p.m., free. Grab some gourds in Half Moon Bay, our lovely little neighbor and (who knew?) pumpkin capital of the world. Gargantuan orange beasts are the theme of this festival; you can expect weigh-offs, tasty pies, carving, ale, and lots of "smashing" jokes, not to mention live music, contests, a parade, tons of arts and crafts, and a haunted house.
Hackmeet 2011 Noisebridge Hackerspace, 2169 Mission, third floor, SF. www.hackmeet.org . Also Sun/16. 11 a.m., free. The West Coast hackmeet, a conference and workshop session exploring the overlaps between technology and social change, goes underway this weekend. Topics include digital security and rights, privacy, Wikileaks, and way more. Food is provided to fuel all those radical typing fingers.
Jimmy's Old Car Picnic Speedway Meadows, Golden Gate Park, SF. www.jimmyspicnic.com . 7 a.m.-4 p.m., free. Dust off that barbeque grill. Everyone is welcome to roast and roam among Mustangs and motorized barstools alike at the not-for-profit picnic event now in its 22nd year. Jimmy scours the meadow with an eagle eye for the car he deems worthy of the "Jimmy's Choice" award.
Children's Creativity Museum Opening Weekend 221 Fourth, SF. www.creativity.org . Also Sun/16. 10 a.m.-4 p.m., free. Zeum, reopening as the Children's Creativity Museum, houses wonders that rival anything out of Charlie and the Chocolate Factory. Exhibits are highly interactive and extremely creative: animation, music, design, and movie studios in which your child can play around to their little heart's content. Plus, free carousel rides throughout the weekend.
"An Afternoon of Soccer Culture" reading with Simon Kuper Edinburgh Castle Pub, 950 Geary, SF. www.castlenews.com . 3-5 p.m., free. Reading from his new book "The Soccer Men," Simon Kuper discusses the secret lives of all-star soccer players. Classic matches will play in the background. This all takes place in a castle-themed pub. If you don't feel British, order a Newcastle.
Vagabond Indie Craft Fair Urban Bazaar, 1371 Ninth, SF. www.urbanbazaarsf.com . Also Sun/16. 11 a.m.-5 p.m., free. The boutique, already known for supporting local arts and craftspeople, hosts 30-plus folks selling their work. Perfect for snagging tons of gifts to sort through later come the holidays.
Textile Bazaar: Treasures from Around the World St. Anne's of the Sunset Church, 1300 Funston St., SF. (415) 750-3627. 10 a.m.-4 p.m. Run your hands over this. Woven goodies from across the globe, brought to you by nearly thirty members of the Textile Arts Council.
23rd Annual Fiesta on the Hill Cortland Ave., SF. www.bhnc.org . 10 a.m.-6 p.m. Can't make it to Saturday's Potrero Hill Festival? Can, but just want to support another beloved SF neighborhood? Really like petting zoos and great music? Take in the sights and eats in Bernal Heights with over 20,000 others.
On the Cheap listings by Lucy Schiller. Submit items for the listings at email@example.com . For further information on how to submit items for the listings, see Picks.