Alright, most people make guides saying you will make millions. Be honest, that's not true. I'm going to list money making methods I have taught myself.
Crafting cheap items into expensive items
There are lots of certain items that when crafted into other items which can be more expensive.
Examples:
Turning stone into stone brick.
General profit per hour:
20-100k
Mining
Mining is a money making method that most players use. Mining is a rather random money making method; you can find hundreds of materials to nothing at all. Sell everything you mine.
General profits per hour:
30-150k
Fishing
Fishing is a method that includes LOTS OF PATIENCE. Without patience, you will seldom profit from this method. I would recommend using a god rod. Anything you get sell it on the shop.
General profits per hour:
10-50k
PvPing
If you are good at the art of killing other players, invest in some god weapons and god armor and go PvPing. Anything you get killing other players you keep.
General profits per hour:
50-200k
Voting
Voting is an easy way to acquire meebles along with assisting the server. Voting, although it is very easy, is not a method you can rely upon.
General profit per hour:
2-6k
Enchanting
Enchanting is a great way to make money. Enchanted tools, armor, and books are always in very high demand and always go for a high price.
General profit per hour:
30-250k
Plot clearing
Plot clearing is a method of making money that includes digging and or mining out plots for mayors or assistants of other towns.
General profit per hour:
10-50k
Potions
Potions are in massive demand from PvPers today. General profit per hour:
30-100k
Mini-Games
Mini-Games are a group of different games including CTF, KitPvP, Boomo, TNT Run, and HG. All of these, if won, will earn you meebles.