Hello there! It's miner again and I am here with a neat little contraption I made. A redstone melon and pumpkin farm! I know, there are a lot of these, but I think mine is pretty good. 

How It Works

You press a button that activates sticky pistons under the crops. The crops then break into their item counterparts and stay on the dirt. Then, pistons push the items off the dirt into a small line of hoppers leading to a chest. It is a fairly simple mechanism but it looks nice and fancy

 Enjoy!