I house my Crested Geckos in Exo Terra 18 x 18 x 24" cages. I typically grow babies out in plastic containers picked up from your local grocery store or Wal-Mart. As for my snakes, I use racks made by Reptile Basics, Inc. The racks I use come in an array of sizes that Rich has made to fit my needs. I've found them to be reliable, functionally proficient, and of sound construction. The customer service has also been great.
*Cage pics coming soon!*