To start off, I TAKE NO CREDIT FOR ANY OF THE MODS IN THIS ARTICLE, IM JUST SHARING THEM WITH YOU OK, you'll need mod loader and audiomod. Get those here: http://adf.ly/4SRaa and here: http://adf.ly/4SRov Credit to Rigusami for this.
The first mod on this list is not the best but is very enjoyable. Elemental Arrows. TNT, Fire, Ice, LIGHTNING! even egg arrows. by Rigusami http://adf.ly/4SRid
The next is my personal favorite mod. Clay Soldiers! This mod allows you to craft small men that will go to battle with each other! They are very customizable and can even ride mounts. Get this amazing mod here: http://adf.ly/4SRt3
The last is very helpful, and I use it alot. Spawner GUI, by Rigusami, allows you to change the mob that spawns in a spawner! It helps alot. Link: http://adf.ly/4SS3L