Big multi-disciplinary problems typically yield vast amounts of ancillary technology and solutions that may last generations... small sample fo things that either were invented for the Apollo program or became commercially viable:

Heat-resistant fabrics for fire fighting

Smoke detectors

portable oxygen

memory foam

kapton insulating foil

cordless tools

solar panels

modern water purification

clear optics grade plastics

freeze dried food

the dustbuster

CMOS digital image sensors

Vacuum packaging

Shock-absorbing shoe soles

modern artificial limbs

insulin pump

scratch resistant lenses

LASIK

wireless headsets

grooved pavement

air purifiers

LEDs

de-icing systems for aircraft