Do something nice for your customers around the holidays. For example, Christmas is a good time to make up little gift bags. You could put in a Christmas card, a few of the $0.99 Christmas themed products like lip balms, hand creams and mini bubble baths, a brochure, and information about the Avon opportunity. For Your Mistletoes + FREE Printable click on the link.
You can put together personalized baskets for friends for birthdays or Christmas. Here's one for a hot chocolate lover. You could also put together a customized tea, coffee, or chocolate basket.
A parent did this for me once. I still have the paint can in my classroom! She filled it with lots of goodies including candy and a gift card. I think this was my favorite gift I ever got!