Here’s a quick rundown on 10 such marketplaces – all of which let you get cash for your secondhand items.

Set a date. Friday, Saturday and Sunday mornings are usually the best time to hold your garage sale. Here’s an insider garage sale tip: Consider scheduling it on the first weekend of the month—a lot of paychecks go out at the end of the month, so people will have cash to spend.

Here’s how to have an indoor garage sale.

1. Take inventory of everything you want to sell.
2. Clear out space.
3. Visually mark off the sale area.
4. Buy or make stickers and label the prices of everything.
5. Get help.
6. Prep the sale ahead of time.
7. Advertise the sale.
8. Prepare to run into celebrities at your garage sale.

1. LetGo. Grab your smartphone and download the LetGo app to start selling your belongings at the touch of a button.
2. eBay and eBay Valet.
3. Gone.
4. Facebook.
5. Craigslist.
6. Nextdoor.com.
7. Trade-in programs.
8. Garage Sale.

If that’s not possible, just err on the side of pricing things where they’re most likely to sell – $1 for a book or record, $2 for clothes, $3 for kitchenware, etc. Write your prices clearly with a marker on a neon sticker and affix it to the item. This will make it easy for shoppers to read them.

50-30-10 RULE: Near-to-new items should be sold for 50 percent of their retail price; slightly used items at 25-30 percent of retail; and well-worn items at 10 percent of retail.

Facebook, Instagram, Snapchat, and Twitter are all useful platforms for advertising your yard sale. Create a Facebook event page where you can invite friends. You can also keep it public, so attendees can invite more people.