One of the big mistakes my parents have made (especially in their old kitchen), and a mistake that LC and I had crept into in the flat, concerned the kitchen: the kitchen is probably the hardest-working room in the house, but we'd managed to fill it up with huge amounts of stuff that basically never got used. In our case, it was a huge number of mugs that we (well, I) don't want to get rid of, but which do nothing but take up a lot of space.
The kitchen in the house is actually smaller than the one in the flat. However, I'm determined that it will have more usable space, largely by adopting what I'm dubbing "The Lasagne Principle".
The principle is fairly straight-forward: anything that doesn't get used pretty frequently must be stored somewhere else. For the moment, I don't care if that's the garage, the utility room, on the dining table, or whatever else - just get it out of my kitchen.
As for "The Lasagne Principle": we have a lasagne dish that gets used somewhat infrequently - basically, every time I make a lasagne al forno, which isn't terribly often (maybe once or twice a year). That will be our cut-off point - if something is used at least as often as the lasagne dish, it can stay; if not, it needs to go.
(All that said, it looks like the Lasagne Principle is about to fail at the first hurdle - the net effect of this is that we'll have huge amounts of kitchen equipment that has been banished and a fairly large amount of unused storage space in the kitchen! So maybe the cut-off point will end up being eased a little... though "The Slow-Cooker Principle" just isn't as catchy...)