I'm sorry for your loss. Yard/Estate sales can be overwhelming if you are trying it on your own. An estate sale company will do the work for you, but research them first, and their fees. Ebay is an excellent place to see what the resale market is like, but you can only see what has sold for the past 15 days. Fees are charged on sold items, and you have to pack and ship things unless you offer local pick up. You get a more limited audience with pick up, as well as Craigs list. But, they both work. You also have to have a PayPal account for Ebay. I buy and sell on Ebay all the time, and have had success on Craigs list as well. Things can go "missing" at yard/estate sales and people will want to cut your prices. But, things will go quickly. Any of the on line sites will need pictures of the items. But, you have an audience from world wide. Local shops may take the machines and such on consignment. There are some great ideas here. Where did your mom live? I am a newer quilter, and always looking to add to my growing collection of quilting things.