We've talked about an appliance garage with cabinets above, but I kind of like this sliding door option. [Thin sliding cabinet doors in a kitchen by Germany company Beeck Kuchen conceal countertop clutter.
outdoor kitchen with black cabinets at the albatross inn / sfgirlbybay
Encombrement et dimensions d'une cuisine de plein air comprenant barbecue, évier, petit plant de travail - http://www.systemed.fr/
concealed: Outdoor Bbq Area Design, Pictures, Remodel, Decor and Ideas - page 6
Outdoor Kitchen- want it! Outdoor kitchen of the Budapest Students Design Sustainable House for Indoor and Outdoor Living The English Garden.