My husband bought a new piece of equipment, and thought he might just have the right cable for it. I’m not sure whether he does or not, but the collection itself helped me understand something about worldbuilding. When my husband commented on how we were looking at our own history, I realized I could use the stuff stuck in the corners of my characters’ homes to explain who they are and how they came to be that way. I’ve used small items that a character treasures for worldbuilding and character development, but I’ve never thought about the detritus of life. This is the stuff that only gets dragged out when you move, or redecorate, or are absolutely convinced that you still have that perfect whatsit hiding in a box somewhere. Very likely the items themselves will not have a role to play in the plot, but will be invaluable for backstory. Who knows, I might even start clearing out the corners of the house to find good examples to use.
Luck and wisdom!