Agree completely with topdawgs comments here in reference to JohnGreenArt's suggestions.

JohnGreenArt is right on target in regards to the torches and Indy figuring things out - I really hope my suggestion for the sand puzzle in the end will help Indy look like he's actually playing a role here. There's even a shot of the pillars that we could move around (we as in not me, but the guys who know what the hell they are doing with all of this technical stuff) to give a clue to Indy as to how the whole mechanism might work, then we can see him knock the stone face blocks out. If this isn't clear enough let me know and I'll give more details on how this can be accomplished.

The torch suggestion is also a very good idea.

But the others, though I'm not thrilled with how the movies pull it off exactly, don't seem like they will work.