Also there is this TED video where a guy tries to build a toaster from raw materials...
I don't think people appreciate the "tech tree" (to use Starcraft parlance) you have to walk down to get to the simplest of modern household items. The toaster is a good example, but now imagine starting from zero -- you can't even start with iron ore, because you don't have any tools to mine it with! So start with banging rocks to get something sharp you can use to cut down a tree, so you can make a handle to make a stone axe. Hopefully this is enough to get some iron ore, but now you also need to make something to smelt your ore in, such as a bloomery. And for that, you need charcoal. And for that...
Basically, the TED guy making his toaster cheated by used modern tools to get his raw materials. And even with cheating, his toaster never toasted any bread.
The tech tree for a dollar store pocket calculator is staggering, let alone a Space Shuttle. I don't think many people are conscious of this when they toss that toaster in the garbage and spend $10 on a new one.