I was fiddling around with BUD switches today and had an idea. This block collector is basically just for adventure maps, or another use I thought of was for Race for the Wool minigames as seen on SethBling's youtube channel, where when you return the wool to your base you place it in the block collector and it seals it up to show that that particular wool block has been retrieved. It is kind of silly as it's no different, but it was just a small idea. Also, for the adventure maps, the objective of the map would be to find chests all over the map that have a block in them, and you take them back to the collectors and put them in, and once you put them all in it opens a door to some kind of treasure room. Of course, you cannot break blocks to put in their place because it is in adventure mode.

You can also remove the added section on the right along with the bedrock/obsidian if you want to make it hold more than one block and not block the hole.

It's simple to make and simple to reset (it's not automatic). Enjoy.