Improving Tripping

[Mighty Halfling]

And of course, being a dwarf helps you resist being tripped, which is important because if your trip fails, your opponent can try to trip you.

 

[quetzyl]

Exotic Weapon Master can gain a +2 on trip checks if they take the appropriate special ability and apply it to an exotic weapon that can already be used to trip with.

Cheers,
quetzyl

 

[kayn99]

Which book is the Jotunbrud FR Regional feat out of?

Kayn

 

[Hypersmurf]

Which book is the Jotunbrud FR Regional feat out of?

I think it's Player's Guide to Faerun, though I couldn't swear to it.

-Hyp.

 

[Wish]

Several people have already mentioned items that improve ability checks, but without specifics. There are two generic ones - luckstone (+1 luck to a bunch of stuff including ability checks for 20k) and pale green prism ioun stone (+1 competence to a bunch of stuff including ability checks for 30k). There's also armbands of might (Complete Adventurer), which gives some nice bonuses including +2 to strength checks for around 4 or 5k.

The other big bonus that nobody's mentioned yet is the minor aura "Art of War" from the marshal class (Miniatures Handbook). It gives a bonus equal to the marshal's charisma modifier to a bunch of stuff including trip checks.