Mind providing examples, then? There are a whole bunch of things that NASA is credited for creating that it had basically nothing to do with.
The same way the first supercomputer had 'nothing to do with' modern day PC's, I guess.
There's literally hundreds of thousands of inventions/parts/discoveries that can be directly based upon Nasa's research. To point them out would be ridiculous; but for your pleasure here's an article on NASA's website about their general impact on the world of technology or if you're not up to the read, he's a quick ten-item list of just some of the things they've directly made.
To find your examples all you need to do is google. Something you seem to be adverse to.
Here's some fun ones for the environment, too.
Uh, well, scanning the "ten item list" shows a mixture of inventions that NASA didn't actually invent and merely improved upon, things that weren't terribly useful until someone other than NASA got their hands on them, and things that aren't really worth bragging about.
So lets see the bigger one...
As famed heart surgeon Dr. Michael DeBakey, who has collaborated with NASA on one of its most beneficial inventions, an artificial heart pump,
Heart pumps were not invented by NASA. This is not an invention, this is an improvement.
advanced breast cancer screening catches tumors in time for treatment, or when a heart defibrillator restores the proper rhythm of a patient’s heart….We see it when weather satellites warn us of coming hurricanes, or when satellites provide information critical to understanding our environment and the effects of climate change. We see it when we use an ATM or pay for gas at the pump with an immediate electronic response via satellite. Technologies developed for exploring space are being used to increase crop yields and to search for good fishing regions at sea.
I see a variety of things that fall under "improvements on already present technologies" and lots of "SATELLITES", which is a rather tenuous connection to the modern world and is non applicable since the Russians beat them to it (using technology and methods taken from Germany, so its not like satellites would never exist if not for NASA).
1978: Teflon-coated fiberglass developed in the 1970s as a new fabric for astronaut spacesuits has been used as a permanent roofing material for buildings and stadiums worldwide. (By the way, contrary to urban myth, NASA did not invent Teflon.)
Improvement.
1982: Astronauts working on the lunar surface wore liquid-cooled garments under their space suits to protect them from temperatures approaching 250 degrees Fahrenheit. These garments, further developed and refined by NASA’s Johnson Space Center, are among the agency’s most widely used spinoffs, with adaptations for portable cooling systems for treatment of medical ailments such as burning limb syndrome, multiple sclerosis, spinal injuries and sports injuries.
Improvement.
1986: A joint National Bureau of Standards/NASA project directed at the Johnson Space Center resulted in a lightweight breathing system for firefighters. Now widely used in breathing apparatuses, the NASA technology is credited with significant reductions in inhalation injuries to the people who protect us.
Improvement.
Look, do I need to go the whole way with this? NASA has invented and improved things, yes, but they ALSO crowd out people who would have otherwise invented other things. You see NASA's inventions (which, again, are mostly improvements that would have eventually occurred regardless), but you don't see what the people who ended up working for NASA would have done elsewhere.
Just compare the list of (practical) things invented by NASA to the list of things invented by, say, the private sector. Even compare it to the DoD and you'd find it outdone rather quickly!