When decorating a home, it's always a decision between minimising displays or showing off everything you've ever collected. Sometimes though, a display of well-loved or precious objects can often de-clutter your cupboard space. The best advice is to rotate your displays so that not everything is out at once. And this way, you get to enjoy everything!
I have a circa 1930s Kodak Brownie camera usually on display by itself, but I pulled out a very cool 1950s Braun camera that used to belong to my grandfather and a 2000 film SLR of my dad's. Together the three cameras represent three generations of keen photographers (not that I've ever actually taken photos with the Brownie).
Likewise the old bubble bath bottles could just gather dust in the cupboard but together make a pretty display.