Help! I know that it is better to have a few large items for more impact, but what do we do if we have many small items of interest? Do you have any ideas of how to display such things (ex. teacups, small bottles, pin cushions, button hooks, etc.)?
No. Unless getting rid of it counts as an idea that is.
I am the wrong guy to ask for advice as you contemplate how to clutter up your home. What you're asking me about is room dandruff, but since you asked I'm going to take the opportunity to pontificate about clutter.
Before. Look at the cluttered up home of someone who probably feels overwhelmed by the business of living.
Displays of small objects are clutter, especially when they exist for no reason than to sit there and add "character." Piles of junk don't add character, they add confusion. A couple of objects that tell the story of your life, and that serve as reminders of experiences you've had, are perfectly fine. In fact, I can't encourage you strongly enough to use your living space to recreate the narrative of your life. If these objects have some actual utility, then that's all the better.
After. These folks are about a third of the way through the decluttering they need to do. Happiness will elude them until they get rid of the crap hanging from the ceiling and the rest of the junk on the counters.
I'll use myself as an example. I like to travel. Every time I go somewhere I bring back a rock or a shell or something along those lines. I keep these rocks and shells and sticks and what have you in a jar on top of my dresser. Now if I had those fragments of my memories laying loose and strewn across every horizontal surface I have it would be clutter. In a jar, those rocks and shells and sticks are a display, and they become a single object that encapsulates everywhere on earth I've been in the last 20 years. When I want to remember Rome or Panama or Grenada or San Francisco, I pull out a rock from that place and get wistful for a moment. Ahhhh, that jar's one of my life's great treasures. What makes that jar so useful is that when I put the Colombian pebble or the Costa Rican twig or the Bahamian feather or the tiny Roman bell back in the jar, I'm not held hostage by my own history. I can stay engaged in my life today. Spookily controlled, isn't it? Hah!
I get it that I'm more rigid than most when it comes to these sort of things, but it's what works for me. However, I am convinced that clutter will prevent you from thinking clearly and it serves as a huge distraction from the business of living right now. If you have to display small stuff, put it in a curio cabinet or a jar or a basket so that it takes up less visual space and stays out of the way. Try it some time. Put away all of your small stuff for a couple of weeks and watch how quickly you pay bills and how closely you pay attention to the people in your life. Cleared surfaces will keep you in the now, believe me.