This Bluetooth speaker from Lexibook is, depending on your needs, possibly the best choice for you. This model uses Bluetooth for easy pairing with other devices.
From Amazon
LEXIBOOK BTP180HPZ Harry Potter-Portable Bluetooth Speaker with Microphone, Light Effects, Karaoke, Wireless, USB, SD Card, Rechargeable Battery, Black/Multicolor, One Size
This product is also available at 2 unverified merchants.