First off, I don't know how the rumor of soaking in burbon or vodka will sanitize. You have to use a high proof spirit for effective sanitation. It takes a prolonged contact time also.
Second, sanitizing the oak is simple. Steam them or boil them. You might loose a little flavor, but I'd say its more effective than soaking in spirits. There is a great
Brew Strong episode on Wood Aging. Jamil addresses the spirits issue and how to properly sanitize chips.
For the vanilla, I'd wash the outside of the pod well, split it open and scrape out the pulp with a sanitized paring knife on a sanitized (plastic) cutting board.