Dried Oranges / To make, cut shallow slits in the orange/lime peel from top to bottom without removing peel. Make eight to 10 slits on each orange. Allow slit oranges to dry in dehydrator or low-heat oven for 12 to 24 hours.
Dried Orange Slices Christmas Wreath - This is a great post, showing how to decorate your home for Christmas, using citrus fruits. There are some great pictures using them & basic info on drying fruit to use in decorating.
Green orange, lemon & spice wreath: Rustic country green orange wreath this wreath consists of dried green whole oranges, lemon slices, nutmegs, bay leaves and cinnamon sticks finished with a jute string hanger and raffia bow