I stumbled onto this article while working on a photobash of a solarpunk scene. I think it does a good job of explaining the concept but there seems to be something wrong with its certificates, which might throw an error in your web browser. https://nwedible.com/urbanite-broken-concrete-retaining-wall-as-a-garden-feature/

Just in case you don't want to check the link I'm also going to plagiarize a few quotes and images from the article:

"The marketing term for “old chunks of broken up concrete” is urbanite. Urbanite has a lot going for it: it’s durable and heavy like natural stone, reusing this product in garden and landscape design takes it out of the waste stream, it’s often a uniform thickness which makes it easy to stack or lay as a permeable patio surface, it’s often available in most urban locations, and it’s frequently free for the hauling. Free is good.

Drawbacks to urbanite can include potential contamination – this is more of an concern if your urbanite comes from a torn out commercial parking lot where all manner of auto fluids may have seeped into it than from the neighbor’s pool deck tear-out. Concrete itself can contain additives that might pose a health or contamination risk, although my feeling is that old, weathered concrete has probably already leached the worst of itself out somewhere else.

I probably wouldn’t use urbanite to build edible garden beds, but I can see great potential for turning this waste product in retaining walls, steps, and patio areas."

And a few examples of recycled concrete patios:

This last one came from https://www.terranovalandscaping.com/90/, which has a few other examples, including raised beds, so perhaps they knew their source of concrete was clean, or weren't worried about the potential for contanimation?

After eating the last pickle save the jar of pickle juice. Then when a broccoli stem becomes available cut the tough outer skin off, chop it up and toss it in the pickle juice. Works well. They reach a taste that’s very close what the pickles tasted like. After 2 or 3 cycles of that the pickle juice starts losing its strong punch. Adding vinegar and a sweetener can help at that point if you don’t have more pickle juice by then.

Otherwise broccoli stems are not too versatile. They’re not that great in veg. stock because they bring a bit of bitterness. So I only use like ½ a stem in a pot of broth (which is wholly from veg scraps).

My next experiment (untested): reusing juice from a jar of jalapẽnos to pickle broccoli stems.

It doesn’t take long for mold to grow on empty beer bottles. Considering beer bottles get returned for a refund, you have to assume that the brewery will make an effort to reuse as many as possible.

I toured a brewery once and they showed us the big industrial bottle washing machine. They said the bottles get scanned for cracks using a laser, and rejects obviously get tossed. The question is: what about mold, which adheres quite well to the corners of the glass? I wonder if the laser also detects bottles that didn’t get clean. Or if they just figure the temps would kill everything and just be considered safe enough from there.