First let me say I envy you, as where I live it is too hot to layer, and I miss it! Try these suggestions: Sweater twinset in your very best color with an amazing statement necklace or brooch; a knit blazer, buttondown shirt with an ascot scarf held with a pin; thick knit turtleneck and long bead necklace with stretchy lounge pants in a crazy print, if you can disguise them so they don't look like pajamas; ethnic pieces from catalogues (Smithsonian, National Geographic) that look like you picked them up in travels to Asia, Africa or South America; Funky little hats, chunky bangles; hair clip, barrette or snood. Shop in consignment stores, Boho boutiques, and Etsy for unique, vintage, or handmade items (1960's Pucci prints, handcrocheted fingerless gloves, jewelry crafted with rough genuine gemstones). If you find something fabulous, remember that it can sneak in to the workplace when mixed with your basics. Have fun shopping!