Cybernetics are machine implants which replace body parts, performing their function with greater effectiveness. They were first introduced in Anno 577 NP, but did not reach optimum effectiveness until Anno 665 NP. It has taken another century before cybernetics were affordable to anyone other than the richest of Solace.
Cybernetics are still hard to come by, and cost a princely sum. You may start with cybernetic enhancements at the cost of 1 refresh each, treating their effects like stunts.
Some ideas of special features: thermal vision, night vision, enhanced strength, hidden weapons, increased reaction time, increased knowledge, photographic memory.