Double your items
First: Place any block down in front of you (gold,diamond,TNT,etc.)
And break it. Then find the block in your inventory and place it again.
Second: Double tap the home button and a bar with apps will appear. Click the first app on the left of the button.
Third: When you enter that app double tap the home button again and hold down minecraft PE until a red minus sign (-) appears, click it.
Fourth: Go back to the same world and that block should be in your inventory and in front of you.
(Works with any blocks and multiple numbers.)
More tricks, tips and cheats for this game are right here - Minecraft: Pocket Edition cheats
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