Can you give me some ideas of what to do with my milk can?

I have been looking for a full size milk can for years. So expensive! My friend found one for free, best price ever! Now it is extremely ruste. It will take ALOT of sanding. What grade sandpaper should I use? Also, any fun suggestions what I can do with it painting, decorating wise? What type of paints should I use? Im putting this next to my flower garden, if that helps! Sorry this is so long. I am just so excited to start this project! THANKYOU!!

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