Tin Toy and Luxo, Jr. are both in the Ultimate Toy Box set. Knick Knack appears in modified form on the Finding Nemo DVD. I'm not aware of any DVD release of The Adventures of Andre and Wally B. or Red's Dream.
I'm still hanging on to my laserdisc set (in addition to getting the DVDs, I hasten to add). And I'll continue to, until and unless Pixar releases the unmodified original version of Knick Knack on DVD; the current version isn't the same. :-)