Set the date for a early weekend in December and have everyone send out invitations to their own customer lists. Also promote it to your Facebook friends and invite them to bring a friend with them. Make sure to include a special discount coupon or special offer to entice all your customers to attend.
Set up the sale at your own home or rent an inexpensive room at your local church or community center. Make sure to include directions to the site with your invites.
Decorate your Open House site to make it festive and be sure to have some holiday music playing softly in the background. Offer some holiday treats with tea and coffee.
Set up your holiday display by putting it into easy categories for people to see and buy with different price points. For example: Stocking stuffers, gift baskets, gifts for teens, men, moms, etc. Also consider offering gift certificates and complimentary gift wrapping.
The easier you make the shopping experience the better your sales. Ho, Ho, Ho!