Spend the weekend exploring some of Nevada County’s most impressive homes. The Designs for Living Home Tour — a benefit for Music in the Mountains — will take place 10 a.m. to 4 p.m. Saturday and Sunday at six residences around the county. Guests are invited to have lunch at home No. 4, where Emily’s Cakes and Catering will offer a choice of sandwiches, salads and fruit. Wine, provided by Besemer Cellars, will be available, as well. The charge for lunch is $10, with $5 for wine and beer. Home tour tickets are $25 (advance) or $30 (day of the …