Why don't you try
Minimaps Button Frame ?
True, it's not a minimap addon, but, it collects the buttons and puts them in a nice little "box" for you. Which you can make disappear. It even has a few skins available for it.
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Ahhhh, the vagueries of the aging mind. Wait.... What was I saying?
Carbonite <----- GitHub main module (Maps ONLY) download link. The other modules are also available on GitHub.
Carbonite-CLASSIC<----- GitHub link to Carbonite Classic. Thanks to ircdirk for this!