I scraped together some materials I had laying around the shop to make a cart to store my air tools. It isn't pretty, but it basically didn't cost me anything. I had a rolling cart that I used for spray painting outdoors with a water trap and regulator already mounted, which I can use if I like. I also added some boxes at the base that I will store bits and discs for the tools. I even put together a little oil bottle holder so I don't have to go looking for it every time I need to lubricate an air tool. I put a description on one of the pictures of how to make the bracket I used to hold the tools. Hope it links up okay.
I think if you click on the photo it will enlarge. My first attempt at posting.