Over the years, I have gathered a bunch of random small items and my favorite way to display these things is in a hinged glass front box. This is the box I have for creepy crawlies and mini monsters, but I have others for gumball machine toys, plastic figures, Batman items… you get the idea.
At Halloween time, I like to bring this case out and set it on the coffee table. When I leave the room, several of the toys glow in the dark which always freaks out the kids! This is a great way to store and display a collection. It takes almost no effort to maintain and the haphazard approach actually looks pretty cool!