Twice is a site where you can buy and sell Women’s clothing(similar to thredUP), and right now you can get a free $10 credit just for making an account here. Once you do that, go here and download their iPhone or iPad app. Open the app, login to your new account, and you’ll get another $10 credit. You can apply this to shipping($5), so you can get some clothing for free. Also, if you send in a bag of clothing using one of their prepaid bags, they’ll give you another $10 bonus credit.
-Update- They now have an Android app, and will automatically apply a 50% off coupon to your purchase if you checkout with that app for the first time. If you have access to an Android device, you should be able to get an even more expensive item for free with that coupon and your credit.
-Update 2- You can use coupon code: FREESHIPFRIDAY to get free shipping today only until 3AM Eastern time, so you can use more of your credit on a free or cheap item.