There’s a recursive barter in the game at the moment involving the corp “Daydream Chems” and their outpost on Earth, chamado “AKK”. The AKK outpost accepts glass and acid, and one of the main rewards it gives you is poison ammunition which can be disassembled into more glass and acid.
The Loop
Etapa 1: Acquire some acid. You can get some from the green acid vats that occasionally spawn in missions, or from dismantling acid weapons and ammunition. (you can also bring other stuff AKK wants for the initial trade, like plastic, organ containers, bloodbags, or poppy straws)
Etapa 2: Travel to Earth and visit the AKK outpost.
Etapa 3: Offer up all of the resources you brought with you.
Etapa 4: Hope you received some chemtrail ammunition. Se você fez, dismantle it and feed the newly acquired glass and acid back into the vendor.
Etapa 5: Repeat step 4 until you get particularly unlucky and completely run out of acid and glass.
Extras
There’s probably a lot of other interactions just like this, but I haven’t discovered them yet. It’s best to just keep on the lookout for possible interactions between the input for a specific location and the loot table that the corp gives out as rewards.
