Pajama Party Host a pajama party at your house! Everybody comes comfortably dressed in adult onesies or whatever they feel like sporting. You can serve cereal, donuts, and Bailey’s with coffee.

Since then, this unique birthday theme has spread — and it's not just for adults. In July, husband-and-wife content creators Tiffany and Caleb Remington (@ustheremingtons) threw a Costco-themed ...