What characters are good to add to a prototype PCB that makes life easier?

I have almost finished PCB prototype assembly except for adding good quality for easy life. Are there any advice?
  • Adding useful information on the silkscreen to designate functional areas/pins/traces. Revision number.
  • LEDs for power and micro activity.
  • Test points at important places in the circuit.
  • Connecting a spare communication channel to a header.

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Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.
Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

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Can I use LEDs without PCB?

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