In the entryway of this recently renovated Weston, Connecticut, abode, designer Heide Hendricks placed a Caucasian rug from her firm’s showroom, Reservoir, to extend a warm welcome. In concert with an octagonal mirror from RT Facts Design & Antiques and Circa Lighting fixtures, the clients’ own Heritage-Henredon walnut chest and collection of walking sticks underscore the home’s Americana mood.