There isn't really room for another bank of cupboards without making the kitchen look cramped so open shelving is the way to go.
If I just throw stuff up there it will get dusty. Is it better to put stuff I use everyday up there so that it doesn't have a chance to get dusty as it will regularly go in the dishwasher? 
everything I own that I use everyday is mismatched, can't afford to buy new plates/mugs/glasses - they just get replaced with the odd one when they break - this means it could look shit right?
Any ideas? It's going to be about 3 x 8 foot of narrowish shelving.