What do you buy for that perennially chic friend whose cool factor is through the roof? The North South bracelet by local studio Luur is a good place to start. Each magnetic half is cut from a slab of Corian countertop, so you can choose from a variety of colors and shapes. While you’re at it, buy yourself a matching set and call it a friendship bracelet. Select combinations are available at Form + Function and Printtext, or you can browse the full list of options at Luur’s website. $37.50 per half. Form + Function, 1300 E. 86th St., 317-569-9999; Printtext, 652 E. 52nd St.