Amazon.com: ASUS USB-BT400 USB Adapter w/ Bluetooth Dongle Receiver, Laptop & PC Support, Windows 10 Plug and Play /8/7/XP, Printers, Phones, Headsets, Speakers, Keyboards, Controllers,Black : Electronics
Amazon.com: USB Bluetooth Adapter, ZEXMTE Bluetooth 5.2 Audio Adapter for Bluetooth Headphones/Speakers, Bluetooth Adapter for PC Windows/MAC/TV/PS4/PS5 Switch, Plug and Play,aptX Low Latency(Audio ONLY) : Electronics
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits