What do you need to store? Glasses, bottles, decanters, what? You could plan in one of those upside down hanging glass racks with more shelf above. Or cabinets- maybe glass front or the same mesh as the bottom cabinet, with lighting inside. You might want to use some space for fiddly drink stuff- corkscrews, linens or coasters, stirrers or bar items. Might be nice to have a mixing tray. You have a service tray now, but it's occupied. Having a mixing tray can be nice to help keep things neat.
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