I sure that like me, we all forget that we bought something. Then we come across it again and we remember "oh yeah, I forgot that I bought that."
In my case I have several cabinets that I use to store trains, track and accessories. There are two orange Lionel boxes In that cabinet that I never really pay attention to as they are turned around so I cannot read the end flap. I figured they were boxcars that really should be in one of the train cabinets.
Today I turned the two boxes around and I was quite surprised to see that they were two Western Maryland Alco A's: a 6-18915 Powered and a 6-18916 Unpowered Alco's. They are brand new in the box that I figure are from 1992 - 1993.
For the life of me I cannot remember buying them!
Now I just need to find some matching passenger cars. I better check my other cabinets.