The logitech mini optical.
I snagged it from ebay used for 10 dollars. The mouse goes for 100+ dollars new. The mouse's condition is in ridiculously good shape. Back in Korea around 2006-2007 it was the starcraft mouse not a starcraft mouse its "THE starcraft mouse." Every progamer was using it even players that were sponsored by razer (NaDa) and other WeMadeFox players refused to change there gear. Why was it the biggest mouse? No one exactly knows some people say it is because its cheap and everyone could get one. But my guess why the office mouse became the most iconic gaming mouse is before pros were in gaming houses they played in PC Cafes. At the PC cafe they became immensely used to the gear that turns out to have a perfect dpi for BroodWar. If you every watch a game of brood war pro league or osl you would be able to see the iconic mouse. So why does the mouse go for so much? It is discontinued making it very rare to come by.
BoxeR aka FakeBoxeR aka MarineKingPrime with the classic peripherals
The Qsenn DT-35.
why is it legendary? Again Korean pros using it from all way back to 1999 were it was a different version the (Samsung DT-35). The keyboard was cheap and was at all PC bangs and the Koreans knew that anything labeled gaming was a gimmick. Even know gaming tags are pretty gimmicky unless the keyboard is mechanical and the mouse has a great sensor and drivers it probably not worth it. The keyboard is a simple rubber dome keyboard. What makes it special? Well if you were to compare multiple rubber domes the qsenn would have the most responsive and less gummy feel than most. The Qsenn feels better and is about 10$ and is Korea and is used in all PC bangs even today. A few progamers in sc2 still use it.
Notice they are using the zowie mico which was modeled off the logitech mini optical.
Boxer's Samsung DT-35