I will add, not knowing that things can be fixed and not knowing how to fix them are only two thirds of the problem -- the ones you can influence yourself. A much more serious issue is that most modern products are not designed to be fixable at all, only thrown away the moment anything breaks. They are made so covers won't come off, so broken areas can't be separated from whole ones. That's vicious, and it's also infantalizing, because it prevents people from doing things for themselves.
So another part of this movement is to search out and buy products that can be repaired. For a brilliant example, look at 3D archery targets. These things take a beating. The core, and sometimes the whole midsection, can be replaced with spare parts. For some targets and companies, all the parts can be replaced. You can even buy repair kits with foam, paint, etc. for smaller touchups. That's fantastic, because these things are really expensive; repairing them saves a lot of money and resources.