Now that the city’s Greenmarkets are rife with autumnal spreads—apple, pumpkin, and chestnut butters abound—the question arises: How to keep your countertop smear-free? The once-humble butter knife gets a sleek update with Tauma Design’s stainless-steel standing knife ($28 at MoMA Design and Book Store, 11 W. 53rd St., nr. Fifth Ave.; 212-708-9700), which rocks hypnotically when nudged but always remains upright. With this knife at the ready, you won’t lack for conversational fodder at dinner parties, and, more important, you needn’t waste time digging around your drawers when a shmear craving strikes.