• A.R.T. Rethought, the all-things-modular pop-up in Boerum Hill, hosts a one-day event, knocking 10 percent off expandable, contractable, stackable wares for the home and office (400 Atlantic Ave., nr. Bond St., Boerum Hill; 718-360-9300; 12/2; 6:30–8:30 p.m.).
• NorfolksNYC, a pop-up space on the Lower East Side, offers fine art, photography, fashion, and jewelry at its Face-to-Face Holiday Market. On December 3, every purchase made between 6 and 10 p.m. comes with a free drink (139 Norfolk St., nr. Rivington St.; 212-387-8010; 12/3–12/5, noon–10 p.m.).
• Martha Stewart Omnimedia opens its doors to the public on its second annual Holiday Crafts Sale, overflowing with Martha-approved wares (601 W. 26th St., nr. Eleventh Ave., ninth fl.; 212-389-9400; 12/4, noon–6 p.m.).
• The Shiny Squirrel, a mobile shop located in the back of a truck, will be peddling Brooklyn-made artwork and trinkets at various locations in the borough on December 4 (the Brooklyn Circus, 150 Nevins St., at Bergen St., Boerum Hill; 718-858-0919; 11 a.m.–noon; Life: Curated, 186 Grand St., at Bedford Ave., Williamsburg; 347-689-9143; 12:30–1:30 p.m.; 3rd Ward, 195 Morgan Ave., nr. Stagg St., Bushwick; 718-715-4961; 2–3 p.m.).
• NMAI Art Market, organized by the Smithsonian’s National Museum of the American Indian, features original artwork, jewelry, woven baskets, photography, and sculptures (1 Bowling Green, nr. Broadway; 12/4 and 12/5, 10 a.m.–5 p.m.).
• More artisanal Brooklyn goods can be found at the Nightwood Holiday Market, a collection of furniture, housewares, and accessories curated by the designers behind the Nightwood studio (200 Livingston St., nr. Hoyt St.; 347-249-9552; 12/4 and 12/5, noon–6 p.m.).
• Meg Cohen Design Studio’s Cashmere Sample Sale is steeply discounting the winter essentials: fine wool hats, scarves, and gloves (920 Broadway, nr. 21st St., Ste. 905; 212-473-4002; 12/4–12/6; 11a.m.–7p.m.).