StarTech.com USB to PS/2 Adapter - Keyboard and Mouse - Keyboard Adapter - USBPS2PC - Cable Connectors - CDW.com
Amazon.com: V7 Standard Full size 3 Button PS2 Optical Mouse with Scroll Wheel for Desktop and Notebooks (M30P20-7N) - Black : Electronics
Silver-Storm Washable Medical Grade 1000dpi Optical Mouse with Scroll Wheel- Dishwasher Safe, Antimicrobial (PS2) (White) | STWM042P by Seal Shield from WetKeys Washable and Waterproof Keyboards