This is just the starting more tips will be coming...

1st tip ----- Beast fur (selling around 60g -80g)

Go to Kelan Village and buy Leather Garment from the shop keeper for 30g each and recycle it in the recycling bin in the bin. Most of the
time you will get beast fur.

2nd tip ----- Crude Oil (selling around 100g)
Go and collect coconuts < i said collect not buy >. 1 good place is going to the small island south of south island, can reach there by
boat no need to go to world map. After collecting coconuts, make them into coconut oil using a centrifuge (2 coconuts for 1 coconut oil)
recycle the coconut oil.

coconut oil >>>> tar/ soybean oil/ Sesame Oil
tar >>>>>> soybean oil/ Sesame Oil
soybean oil/ Sesame Oil >>>>> crude oil

3rd tip ----- Harl grass (selling around 30g to 50g)
recycle other grasses to get harl grass

more tips coming up....