Not sure if this is simple at all. I'm experimenting with a personal challenge I saw suggested on Reddit by playing Infinity Evolved Expert 1.7.10 on a skyblock map without Ex Nihilo. My original goal was to become better at getting resources in this particular pack without a lot of world destruction / branch mining. I started with a lava bucket, a dirt block and a tree, and have been doing ok so far.
Where I'm stuck is the clay, so I have several questions, the answer to any one might be enough.
1. The quote I saw from the thread said "Clay can be found in MFR's fished up plastic bags (I think)". I can't seem to find a lot of info on fishable plastic bags to see if this is even possible. NEI doesn't give me much info and there is no reference to fishing these on any wiki I can find. Standard manual fishing hasn't brought up any of these. How can I find out if they even exist?
2. I've built AFK fish farms in vanilla before, but only in newer versions than 1.7.10, and I've never fully understood why they work. I'm struggling to figure out what a minimal setup might look like, as at the moment I've got a total of three iron bars and two redstone from my dark room mob farm, and can't afford to build anything above the bare minimum in iron and redstone requirements. Is there anywhere I can go to learn more about the actual mechanics of fish farms so I could work out a way to minimize my costs to build one in this version (1.7.10)? All the videos I can find just show builds, but none explain much about which parts are really necessary and why.
3. Is there some other way to get clay prior to progressing through the coke oven -> forge hammer -> cauldron chain? Wondering if I'm missing something obvious. So far I have the obvious: stone, wood, gravel, sand, dirt, a mob farm, vanilla passive mobs, and have started Agricraft mutations, but can't see another path to clay other than through magic.