I track my vintage inventory in an Excel workbook, using one sheet for each type of goods (ceramic, furniture, linens, etc.).
I'm a big fan of GoDaddy bookkeping because it imports sales directly from Etsy. I have a business debit card and checking account that are also linked to GoDaddy so all expenses are imported. I can check revenue and expense through their app. GoDaddy also generates my Schedule C at tax time.