If you're worrying about wasted room, you can definitely play around some more to find ways to fit.

Personally I just skip all that and either hang them from hooks, or throw them into a tall, upright container (like a vase or can put something). I've got all my oddly shaped utensils like that, and I've got this old vase thing that stores my most common utensils, within reach of my stove. The access matters more than the storage.