Hang IKEA racks in an open space on the side of one cabinet, for extra container storage.
Make a rotating rack for those clunky serving pieces above your countertops.
Hang your spices on the wall with magnets
Put magnets on your spice jars, so you can store them up on the wall with ease.
Get those bulky pots out of your cabinets and hang them in easy cooking reach.
If you've got a gap alongside your fridge, make use of that space with an added roll-out pantry.
Stick a few file sorters in your cabinets for those hard to store items, like cutting boards & pans.
Hang a few easy shelves inside your kitchen cabinet, to make some extra space for spices.
Add a simple shelf and holder inside your cabinet, to store flat items vertically.
Turn a wall into a much needed organizer, by adding a large piece of pegboard.
Use wooden pieces (or even an entire crate) to store trash bags in a clean, efficient way.