What was the most popular gadget in 1999?

In 1999, one of the most popular gadgets was the portable MP3 player, particularly the Diamond Rio, which was among the first devices to allow users to carry and play digital music. Additionally, the Nokia 5110 mobile phone gained significant popularity for its durability, customizable ringtones, and games like Snake. These gadgets reflected the growing trend of personal technology and digital media at the time.