Ever stumble across things you have and have no memory of where they came from and you can't even remember you had them?

I was moving some stuff around in the laundry room last night and found a couple of Walmart bags beneath some blankets. One bag had a set of FAL handguards in it and the other bag had a complete Glaco shoulder holster rig. I did have a FAL at one time so it's possible the handguards might have been left over from that but I don't recall changing them out. I have no clue how I ended up with the Galco rig or even what it fits. Might have to research the holster and see if it fits anything I currently own.