Assume a transhuman world where body modification, gene splicing, nanotechnology, biological-technological interfaces, brain emulations, AI, and basic mind modifications exist.
What augmentations would people commonly have? Not for combat, but for living daily life, non-specialist enhancements. Things that would be common enough that nobody would question them, but they don't need to be universal. They should be just things that you use in your daily life.
People have colonized the solar system, so zero-gravity, radiation, temperature ranges, and other things that space colonists face exist.
The implants are reliable, and are cheap if they don't require considerable modification, and maintain themselves if you have a AI manager implant.