Clever Improviser( Complete Scoundrel, p. 85)
[Manipulation, Skill Trick]
Tools? Why would you need tools? It's just a combination lock with a poison needle trap, after all.
When making a Disable Device or Open Lock check without using thieves' tools, you ignore the normal —2 penalty.
You can use this trick any number of times per day until you fail a Disable Device or Open Lock check made without using thieves' tools. After a failure, you can't use Clever Improviser again until after you have rested for 8 hours.