Ahh, come have a look, here are some of the local oddities, the bits and pieces that need some context, a little flavor, and even some rules. In this case, those rules are Fifth Edition, but only the look is different. Rather than adding third part content, I just describe, draw, and otherwise re-skin a lot of old items. Giving them a new look keeps people guessing, and that’s what you want if you don’t want them pretending to not know what the latest acquisition does when you say the magic word. As a result, the exact same concept can be used across multiple systems, just substituting for that system's version of the same thing.

       Rym’s relics are the remains of a plastic fantastic world of the future, a place of wonder-materials and wondrous items you’d see in any optimistic diorama. It all came true for the people of that age, but at a terrible cost, and now the few remaining specimens in working order are being hoarded up by ruins-raiding adventurers traveling between Fallen Axis and the Twin Paradise, where such things are traded for incredible wealth and privilege, or even citizenship. Even the fish here are a prize.