I always thought a full watch box is just enough. It was for me until a few more must haves popped up. The simple solution is a bigger watch box. I’ve now got 3 watch boxes including a 24 watch winder and a 6 watch winder. Also a travel case for when I’m away overnight - that one only holds 8 so just a short term solution.
Yes, it’s an addiction, fortunately one that doesn’t have to be excessively expensive - you just need a secure place to hide them from the wife!