I need a lid for my UDS

Hey guys- I am in need of a lid for my UDS. The drum I got came without a lid and I have no idea where to get metal to fashion one for it. I am on the look out for a kettle lid I can use but I haven't had any luck lately. I thought of covering the top with a couple layers of thick tin foil and then using a bungee cord to keep it tight. Do you think that will work till I can find a cheap kettle to poach the lid from?

PS. I love this site. I've been lurking for a long time but this is my first post.