A fishing system.
-guide How to make the Fishtopia fishing pool/pond
Mining - Use dynamic blocks for the mineable ores
Cutting down trees - Enable damage for the tree props and then make an item granter(For the item use like a a brown seed or something that looks like wood) . Wire the item granter to the tree.(Prop destroyed - grant item.) Use a pickaxe as an axe for cutting down trees.
Caves- Make a something that looks like the entrance of cave and the if they player goes near it make the player teleport to another area. You can make the area the player is teleported to cavelike.
Dungeons-Put a bunch of sentries and make the player have to defeat the sentries for a reward.
Raids- Similar to dungeons . but raids make sentry’s attack the village.
and you have to defeat the sentries before they wreck to much havoc on the village.
Trading-Make like a shop with vending machines.
Farming-The Cursorian Full Farming System
I stole all of these ideas from Minecraft.