Do you have a database of customers? Can you create one and then start marketing to it? Can you go online and have people sign up for newsletter updates or create an e-commerce site so customers can purchase items from your current inventory?
Can you go back to your current suppliers and renegotiate terms? Anything that will help cash flow while you work on increasing sales will help you stay in business, as will finding a new location, buying a building or even going back to your current landlord to renegotiate your lease.
All the best.