Now you can order a third round of free COVID test kits from USPS
"The procedure is largely the same as it was when the US launched COVIDTests.gov in January; you go to the site, fill in your name and address, and the tests will show up in your mailbox. According to the USPS, though, because you’re getting eight tests this time, they’ll be shipped in two separate packages. You’ll receive a tracking number for each."