I bought a piece of 1.5 inch stiff foam to try to fix a sag in a bed. It didn’t work but having that thick piece of solid foam around has been a life saver.
Need something flat to put a laptop on? Throw it on the foam. Going to be doing something that requires you to be on your knees for a while? Get the foam!
It went from stupid purchase to something I’d gladly replace if it broke.
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That’s by far the biggest issue (which I say not to diminish the others, but just to emphasize how bad this one is). The sheer space that cars take up in terms of roads and parking lots makes it practically impossible to design a city capable of accommodating them without ruining it for walking/biking/transit by having to spread destinations too far apart. We literally bulldozed thriving downtowns to make room for them (compare: Houston 1938 vs. Houston 1978)!
On top of that, cars are responsible for facilitating the literal Ponzi scheme that is suburbia. In short: subdivisions full of single-family houses with a lot of street frontage per housing unit generate less tax value per unit area than the infrastructure connecting them costs to maintain, making them inherently unsustainable financially (let alone ecologically, etc.).
Because Americans urban planners in the '50s had a hard-on for cars instead of taking bikes seriously as transportation, almost all of North America and increasing parts of the rest of the world are now fundamentally built wrong in a way that destroys health, the economy, and the environment all at once, and it’ll cost trillions of dollars to fix it.
I say this without exaggeration or hyperbole: ditching bikes in favor of cars may vary well have been the biggest disaster in the history of the world.