Icons for stuff which will likely be added soon
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Laser/hologram projector (to be used as a component in the cosmetic as well as HUD upgrades...currently using that nether star design because it's pretty and multicoloured)
Carbon Myofibers (artificial muscles)
Glycerol (transparent goop)
Carbon fiber strands

Cooling systems

Icons for stuff that will be added eventually
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Generators of various types (kinetic, coal, uranium, fusion...)