(3.5e/PF1) Ways to do more things and use more skill types while Raging?

[Gruftzwerg]

Rage Mage is your best bet for casting. Alternatively Runescarred Berserker can work too.

Note that you can use martial maneuvers and stances while raging (from Tome of Battle).

Tumble checks to avoid AoO should be legal IIRC.

And if you are looking for Rage alternatives, have a look at Drunken Master's "Drink like a Demon" ability.

edit: we had a Rage Mage round in the Iron Chef competition here a while ago. Maybe you wanna look into it:
https://forums.giantitp.com/showthre...round-CX/page3

(the 3 spider related build are from me^^).