Born in 2021

A selection from Wikipedia's '2021 in the United States'. Not a complete list.

• January 13 – Donald Trump becomes the first U.S. president to be impeached for a second time, following a 232–197 vote in the House of Representatives.
• June 24 – The Appellate Division of the New York Supreme Court suspends former New York City Mayor Rudy Giuliani from practicing law over his false claims about the 2020 election.
• July 6 – 2021 New York City mayoral election – Eric Adams was declared the winner of the Democratic primary for mayor of New York City.
• August 29 – Hurricane Ida makes landfall at 11:55am CDT near Port Fourchon, Louisiana, on the 16th anniversary of Hurricane Katrina.
• August 30 – Operation Allies Refuge: The United States withdraws its remaining 2,500 troops from Afghanistan, ending its 20-year involvement in the War in Afghanistan.
• September 3 – Jake Angeli, the so-called "QAnon Shaman" pleads guilty to obstructing a proceeding of Congress during the January 6 attack.
• October 5 – Windows 11 is launched by Microsoft.
• October 7 – Ghosts based on the British sitcom of the same name premieres on CBS.

Source: Wikipedia (CC BY-SA 4.0)

• Squishmallows
• Pop It!
• Pokémon Cards (boom)