Tricky Minecraft

Minecraft can be tricky :
1. Water-holder
     put something like sign, tripwire hook, trapdoor, door, etc. Can hold water perfectly.
2. Lava-holder
     the same thing like Water-holder. Amazingly, the lava didn't burn the signboard.

Those two can make a perfect base hideout
----------lava----------      ]
sign     sign     sign    sign     ]
----------water--------      ]
sign     sign     sign    sign     ]
                                          ]
Empty Rooms                    ]
----------------------------

3. Fake bush
     A base made from bushes can give advantage to the user ( But if the forest burned down, sorry ;))