Collect crude and low grade fuel and put low grade fuel in the public quarries. Turn the crude back into low grade and repeat. Sell Low grade to /shop (end of wipe maybe as low grade is useful)
Buy ore/wood teas, get an ice pick and go find those nodes in the snow or along cliffs. Teas will boost the return, getting your ez levels up will help also.
Start a fish trap farm, you can sell the fish or skin it and compost the pieces of fish along with any other food. Sell the fertiliser at bandit.
Start a player shop, sell stuff you have for some scrap or whatever you'd like to collect more of.
Start a hemp farm, sell cloth to bandit.
Start a corn farm (keep all corn and corn seeds or buy from bandit) Sell corn back to bandit.
Scrap roads, tunnels and puzzles and recycle all the loot.
Run the quarries with low grade fuel, sell what you get to /shop Cash in all high quality metal to bandit.
Many of these things you may only get a small amount at a time, keep it somewhere safe until you have more than enough to sell.