This is a challenge for an SMP server which allows griefing (I suggest this on a server where it is grief pvp oriented). Suggested for five people, though it can be done solo.
You are a small nomadic tribe, and you need to survive as such. The rules:
-No cobble structures
-No large wood structures
-No mining stone or ores
-You must build with wooden logs, as what you are roleplaying is not advanced enough to make planks
-Wool will be your main building material, to simulate tents. If you loot planks you can use them.
-You will find most of your tools looting other players
-If you farm animals, those you are keeping must be brought with you. They cannot be penned and left for when you next go there.
-You cannot breed animals. You can only farm them for milk and wool.
-No crafting! Your tools will be stolen.
-No changing spawn point. Also, no staying within 300 blocks of the spawn point. You are expected to have left it by 300 blocks by night 2.
-No using redstone torches
-You can craft torches if you find the coal.
-You MUST discard all torches you have used the night before - they have burned out.
-You can use a furnace, and craft sticks. These sticks are for burning in the furnace. Thus your main light source will be the furnace.
-You cannot make bread.
-You cannot enchant.
-You can build boats - treat them as rafts.
-You can craft and use flint and steel. The steel must be looted.
-No villager trading
What do you need to do? Keep hold of one diamond block. If you loose this, you loose.
You cannot stay in one area for more than three nights, but you can return to that area after at least four days.
Note: I am not responsible for any server block or ban placed on you. I did this on a server for which griefing is part of its rules - meaning it is allowed and encouraged, to filter out the weaker players who cannot defend their stuff. I suggest you do it on a similar server.
Your total score:
-1 point for every day you keep the block.
-5 points for every diamond, emerald and quartz you loot
-2 points for every piece of iron you loot
-4 points for every gold you loot
-5 points for every house you burn down
-2 points for either killing every animal in a farm or setting them loose
-3 points for everyone you kill
-20 points for every village you destroy (this means killing at least 2/3 villagers)
-10 points for every forest fire you cause (this means you have to see at least fifteen trees go up in smoke)