Heh, I feel ya Brad. I was only in the rental house for 18 months so you would have thought with that move I'd "discovered" things from storage. Nope. When we moved over summer I definitely stumbled across some "hm, when did I buy that?" items in the garage.
The gem was a set of new MCPi front control arms for the VW. I am pretty sure I bought those when I lived in Tucson (<2014). No idea I had them.