User blog comment:Mcpegamer9000/ANYONE KNOW A CHEST DUPE GLITCH/@comment-4996890-20130901171400

Look up block duplication glitch. Its something like this:

Place block, exit game, double tap home button, close out app, then open it, and you will have the block placed with an extra one in inventory! (IOS Only I think, and it doesnt always work 1st try)