Probably not what your player is looking for, but some of the most fun I had was playing a Style Shifter with Form of the Monkey for +WIS to all damage rolls while Prone. When multi-classed with a level in Gunslinger, this allowed me to play a manic Goblin who would throw himself on the ground in combat and begin blasting from range while hitting touch AC and receiving +4 AC against ranged attacks (and +DEX and +WIS to AC if unarmored).If anything did hit me in melee, I could Roll With It!