Mining
They pillar up to reach high blocks.
If they're standing close enough, the block breaks right away. What drops still depends on the tool in their hand. When the ore is above them, they build up to it instead of jumping and swinging. If they have nothing to place, they mine some stone, dirt, or cobble nearby, pick it up, and then pillar.
Craft and smelt
They craft and smelt, then pack up.
You can type diamond or minecraft:diamond. A one-time job runs the whole recipe right then. If the bot placed the crafting table or furnace, they break it when they're done. Smelting still uses fuel.
Enchant and anvil
Enchanting tables and anvils work too.
Enchanting costs lapis and levels. If the bot placed the table, they break it after a one-time enchant. The anvil uses the item they're holding, plus a book or another item. In creative they skip the XP cost, and they still use the materials.
Pathfinding
They can get around walls, lava, and drops.
PathFind starts off on a new world, and the world remembers if you turn it on. With it on, walking forward or to coordinates goes around blocks. They can bridge over lava and hop down short drops. In creative they fly. While they're placing a build, that flight stays slow and steady.
Ghosts
A ghost that can replay what you did.
/gost spawns a ghost for a player. Nobody can push them, and they don't shove other players. You can record someone, then play that back on the ghost.
Inventory and skins
Check their inventory, or change the skin.
invsee lets you put items in the hotbar, armor, and offhand. For the skin, copy another player, or fill the whole thing with a color like black, red, or blue.
Boats and items
They can row a boat, and items can have cooldowns.
In a boat, move forward, back, left, and right rows it. On the ground, those same commands just walk. /item give gives an item that goes on cooldown when it's used, like an ender pearl.
World settings
Each world keeps its own settings.
With StunShield on, disabling someone's shield pops them up about a block. Team protection keeps teammates from hurting each other. PathFind and StunShield both stay saved on that world.