You need to provide more information. 2 Words is not done. You need to tell us what the usage would be, Desk Setup or Portable, Bluetooth or USB connectivity, etc?
If you need a portable setup, then Philips Spa75B/94 Laptop/Desktop Speaker is an excellent choice. Plugs into the USB and plays quite loud. It sits on screen's upper lip. If you are looking for a desk setup, then you have tons of options from Creative, Altec Lancing, Swan, JBL, etc. available on Amazon.