Sand Casting Workshop @ Bow Market, Somerville — Come to Bow Market and bring a small object like a toy or ring and learn to replicate it in metal by carving a mold out of oil-infused sand and pouring molten pewter into it, take home a finished casting, 4 tickets left | $125 • 7-9PM

LEGO Adult Night @ LEGO Discovery Center, Somerville — The whole LEGO Discovery Center to yourself for a night of themed building competitions, Kingdom Quest, LEGO prizes, and photo ops with LEGO characters, adults only | $20 • 7-9:30PM

Immersive Chocolate & Tea Pairing @ First Street Market, Cambridge — An immersive evening pairing craft chocolate with herbal teas guided by a chocolate sommelier, with plant-generated live music and ambient DJs, all tastings included | $53 • 7-10PM

Boston Sings A Cappella Festival @ Somerville Theatre, Somerville — Six college a cappella groups from around the country compete for the 2026 Scholastic Championship and the Golden Lobster trophy at the Somerville Theatre, doors at 6:30PM but the festival goes through the weekend | $40 • 7:30PM

GLOWBALL @ The Armory, Somerville — Somerville’s most illuminating party returns with a glow-in-the-dark rave that takes over the Armory performance hall with pop-up dance and circus performances, small bites, glow accessories, and face painting included, all supporting local arts | $40 GA / $100 VIP • 7-10:30PM

Club Volo Community Day @ Assembly Row, Somerville — Open play across pickleball, beach volleyball, bocce, cornhole, and shuffleboard to celebrate the venue reopening, bring friends or family and warm up for the season or just hang | FREE • 12-4PM

Community Art Celebration @ Connexion, Somerville — Live painting, a photo booth, music, table art, and lights at the final celebration of the Future Is Already community art series in East Somerville | FREE • 1-4PM

Plant Swap @ Lamplighter Brewing Co., Cambridge — Trade your cuttings, seedlings, and propagation projects with fellow plant lovers at Lamplighter's back taproom, whether you're a seasoned plant parent or just starting your collection | FREE • 1:30-3:30PM

Spring Grown Up Book Fair @ Aeronaut Brewing, Somerville — A book fair at a brewery with curated picks, stickers, mood rings, and all the nostalgia of a school book fair except you can drink beer | FREE • 2-6PM

Rebirth Listening Bar & Night Market @ First Street Market, Cambridge — A listening lounge night with open format music, board games, a mindfulness room, 10+ local vendors, raffle tickets, and cocktails and snacks to close out the winter season | FREE • 7-10PM

Small Mart Vintage @ Crystal Ballroom, Somerville — Vintage markets start making their seasonal comeback with 40+ small businesses selling vintage, handmade, and artisan goods in Davis Square with racks worth digging through, one-of-a-kind finds, and drinks at the bar | FREE • 11AM-4PM

Might Delete Later Writer Readings IV @ Satellite, Cambridge — Short readings from local writers testing out fiction, poetry, comedy, songs, and zines they're still working on, grab a beer or coffee and listen in | FREE • 12-2PM

Archaeology Fair @ Peabody Museum, Cambridge — Harvard researchers share their work across two museums with hands-on stations where you try flintknapping, handle Inca string writing, compare pig skulls in the zooarchaeology lab, and see how lasers preserve Maya monuments, regular admission applies — see the list of activities HERE | 1-4PM