I agree about the tins, they are great but I was mobile for over 10 years with no spillages. I put all my waxing stuff into a childs toy box, you know the plastic ones you can buy, the stacking ones. I would wedge the pot with the rest of the bottles and strips etc to stop it moving around inside the box.
To be honest by the time you leave a client's house you wax will be cooling down anyway and less fluid and the pot won't be full anyway. :green: