Well...having moved from a home with a very large kitchen and lots of storage space to a home built in 1864 with a much smaller kitchen space (even after a renovation, it's still lacking a lot of storage space), I feel your pain.
I didn't have enough money to really change the footprint of the existing kitchen, so I had to be creative in how to come up with the storage I needed. I have a slide-out spice rack right next to the stove where a filler space would be ordinarily (one downside -- only McCormick size bottles fit, not the fancier organic spices). Also, I installed a shelf above the stove (between the stove and the micro-wave) to hold things I use all the time (my favorite pasta, extra herbs/spices). I also used the corner space for a large lazy susan cabinet, so that the cabinet itself is huge, and the lazy susan adds accessibility. A corner cabinet above that keeps my large chafing dishes hidden in its depths while I keep my coffee beans and tea leaves in glass jars in front of them -- pretty and functional).
In my case, I wouldn't have been able to fit a large square cabinet when my corner cabinet is -- I have an opening of about 8 inches, but with the corner cabinet and lazy susan, it really opened up a lot of otherwise unused space (ordinarily, I'm not a fan of them either, but for my kitchen it works perfectly).
I use a large-mouthed canister on the stove top to hold my whisks, spoons, spatulas, and tongs. That way they're right where I need them, when I need them.
I also used a cabinet of drawers right next to the dishwasher (easy for putting away) -- one for silverware, with the divider built in, one designed for my Henkels and steakknives, an accessories drawer, and a deep accessories drawer to put my larger gadgets (potato ricer, hand blender, etc.) in.
In the two cabinets I have for everyday dishes and glasses, I use mini metal standing shelves to stack salad plates over plates, rather than having them on separate shelves. You can pick those up at Target for, like, $4/shelf.
I added a row of cabinets on one blank wall and in there I put two large, deep pots and pans drawers -- ideal for storing my pots with their lids and all the tupperware/storage stuff I have. Above, I used cabinets with glass doors to show off my glass, pitchers, and serving bowls. Above my refrigerator, I use a glass-fronted cabinet as my liquor cabinet -- a little bit of a pain to reach, but it keeps them out of the way, and looking pretty.
I also have a large cold-storage pantry attached to the kitchen. It's kind of a mess right now, but in a few weeks, I plan to demolish the old shelving in there (barely hanging on, and covered in what I'm sure is lead paint), and use chrome shelving units instead. That will give me the ability to store things higher and make the most of the space. In there, I keep my big stock pots, the enormous sautee pan I only use occasionally, and food that I don't need to have on hand immediately when cooking: pastas, baking supplies, kids' snacks, canned goods, cereals, etc. Also I keep my big Kitchen-Aid mixer in there, and the other gadgets I don't want cluttering up my limited counter space.
One thing I regret -- I have a huge laundry room backing up to the kitchen, and I wish I'd been in a little less of a hurry to renovate when I moved in, or I would have moved the shared wall to add to my kitchen space. Think carefully about your budget and what you might be able to do creatively to add space to what you have now. I love my kitchen, but it's still hard when I have people over that want to help with dinner, but there's only prep space for me and one other person. Even a small prep island would be worth it if you can spare the space.
Hope that helps some! (And try to prepare yourself for the pain of renovation -- even the "simple" renovation I did had us eating off of paper and plastic for 6 weeks, and the plumber and electrician became my new best friends as they were at my house every other day it seemed. :))