I'm The Awkward House Guest

I did a job in Arizona back in 2014, and stayed at my wife's friend's house. Her husband showed me this cool patch thing, and I asked if I could have it. I don't do stuff like that normally. Worse yet, I've no idea why I wanted it. So after a little over a year and a half later, I've gotta figure out a way to return it. Do I sneak it in somehow or do I just give it back? This sounds like a Seinfeld episode...