MineTraps Mod is an extremely great Minecraft mod that adds several new traps and blocks like mines, bear traps, nail traps, toxic mines, spikes and more into the game. You can use these traps for many purposes not just to protect your home or catch hostile mobs.
How to install:
Make sure you have already installed Minecraft Forge.
Locate the minecraft application folder.
On windows open Run from the start menu, type %appdata% and click Run.
On mac open finder, hold down ALT and click Go then Library in the top menu bar. Open the folder Application Support and look for Minecraft.
Place the mod you have just downloaded (.jar file) into the Mods folder.
When you launch Minecraft and click the mods button you should now see the mod is installed.