Trapped chest is a chest variant in Minecraft. It looks almost exactly the same, but with red pixels around the latch. Moreover, you'll need a regular chest and a tripwire hook to make it. Combine these items in your 2x2 crafting grid and the trapped chest will appear on the right. This chest is a container block, as well as a redstone component. It transmits redstone power to all four sides and also downwards. You can use to to make some really funny and successful pranks on your server.
Dropper is a redstone component block that can eject items in the direction it's facing or put them in a container like a chest. You'll need 7 cobblestone, one redstone dust, and a crafting table to make it. Place redstone dust in the middle slot of the bottom row and fill every other slot with cobblestone, leaving only the central slot empty. Dropper will activate only once it receives a redstone signal.
The clock in a tiny but essential item, which tells you exactly what time of the day it is in Minecraft. It does so by rotation of the image between a bright sunny half and a dark starry-night half. Now, if you are wondering, you will need gold ingots, redstone powder, and a crafting table to make a clock. You need to place redstone powder in the center cell and then surround it with gold ingots in a diamond pattern to get the clock.
Powered rail is a special rail type you can craft with six gold ingots, one stick, one redstone dust and a crafting table. First, fill the left and right columns of the grid with gold ingots. Then, place the stick in the central slot and redstone dust right below it. As you do that, six powered rails will appear on the right. You can use powered rails as a road for minecarts. They can act as a boost for them if the rail is activated or as a break if the rail is not activated.