These are a few custom crafting recipes. you may have to view this entry in your web browser as it is comprised of pictures. This is not a complete list and other plugins add custom things too such as VanillaAdditions and even Slimefun adds a whole new custom crafting system.
A diamond hoe and a dropper makes the End_Rod which is used as an auto farm on this server.
A Saddle can be crafted out of 6 leather in 2 rows, like this.
A shield with our server's logo on it can be crafted by placing any blank shield in the crafting table.
Leather can be crafted with 9 rotting flesh like this.
A Dragon's Breath Potion can be crafted by using 8 fire charges surrounding an empty potion bottle.