Astromech with a tray

[Noodle]

I was playing galaxy of heroes the other day and noticed they've an R5 unit with a silver tray serving drinks on the main screen. I was wondering if someone could add a very simple tray to the JA default R2 (or R5) unit. I'd use it for decoration on my own cantina maps and I imagine others would use a resource like this too. 

 

Sadly, I can't find a good reference image, just the ones of R2 in ROTJ (which looks way more complicated than necessary for JA)