

The primary concern with fdm printed parts is bacteria growth in the gaps and cracks, which you cant really avoid. Some materials allow vapor smoothing, but the most popular candidates ABS and ASA are not food save, even if perfectly smooth.
For storing stuff that does not support bacteria growth (for sure salt, maybe tea bags and pepper) PETG is a good choice. Strong consistent layer adhesion enables water tight print. Its relatively chemically robust and will not chemically react with your food, and not leach out much if at all. It also means its mostly dishwasher safe, especially at low temperatures. You MUST have a properly tuned PETG profile to get a close to perfect surface with minimal defects. Burn of any stringing, otherwise it will end up as microplastic in your food.
For storing stuff that can spoil, the requirements are a lot higher, and the only option is coating with a food safe resin. You should research what is compatible with the printed plastic, and maybe avoid dishwasher or aggressive cleaners.
I’ve had to use privatized public transport for a few years, and also driven car for a few years.
Unfortunately public transport is unreliable af. I can tolerate the occasional delay, but if you need to get a connection and miss it, it often was at least half an hour of extra delay. Plus this often happened when its either exceptionally hot or cold, while I had to wait outside. And don’t get me started on strikes. Yes, workers should be paid appropriately. But if thousands of people suddenly can’t get to work because their line is canceled, what else should the people do? Take there non existing cars? Take the overbooked car sharing, uber and taxis, none of which can handle the surge in demand?
So as a first step, I’d rather start with improving public transport. Streets are owned by the state, why can’t rails be? Make it so good that I prefer using it. Because unless that happens, you won’t get the majority support for making things worse (even if it is to make things better overall)