Weve all probably made an "invention" to make things easier,to suit ourselves/needs..
Its called improvisation(is that a word or have i improvised/invented)
I,m disabled and i havent "invented" anything,but ive worked out how to use/adjust things to make my life easier..
We all do it,it may look strange to others,but it works for each individual..
Hard to invent something truly "new"