Over the years I have collected “stuff” that has a link to my One-Name studies. I try not to accumulate items that are a hassle to store, but I have caved every now and again! Typically these things are post cards where the recipient had the surname Butcher. Some I have bought, others I have been given. I have an eBay search filter set up for the name. Each day an email plops into my inbox that tells me what material is newly listed, I can then look and plan to schedule a bid.
There is also an eBay filter for the Orlando study and Sutera which is the Commune that my family come from. These add a different dimension to the study and I often use these as a starting point to research further.
As I said, on occasions I have caved or got carried away. I own a lovely selection of Orlando Cherry Brandy bottles. They are currently living on my dining room windowsill.