I recently purchased a detailing cart and wanted to find a solution to keep my bottles secure and prevent them from moving or tipping over.  I thought I would give it a shot and build something myself seeing as I had a specific design in mind.  Here are some details of the project...   Started with a heavy duty steel 3-tier cart and added the Adam's 'A' to class it up:   IMG_20160916_1 by avimore, on Flickr     Added some shelf-liner to all three levels for some padding and protection: