In my family, Charcot-Marie-Tooth (CMT), an inherited nerve disorder, forces us to be careful, too. I have some mild neuropathy in my feet, and my 12 year old nephew appears to have a bad case of CMT. His father, grandfather and great-grandfather also suffer/suffered from it, as do two more of my brothers.
So we, too, are careful of pins and other small items that could be stepped on. When my nephew is over for a weekend, I always make him clean up the path from the bed to the door - but make it a joke. I say to him, "Don't call me to complain about your sore foot if you need to get up in the dark and step on that..." He always gets the message.