A cool inventory system is like in Legend of Mana on SNES.
Or in the last ZElda Twilight Princess , a circular inventory ;
made in Mass Efect in some sort also : easy to pick with mouse and more fast to use !
Zelda inventory

Mass Effect combat inventory

Just ideas laugh

Just do It !!

http://independentcreator.over-blog.com/pages/3D_Models-7792999.html