I don't even scrap my weapons. I stock them all up and then barter them off for stuff that I need. Like hard to find ammo. Same goes with clothing/armor and other items. I'll pack rat them up and then barter them off when the vendor restocks.
Granted, last playthrough I was using the console a bit too much. I got tired of chasing all over the Commonwealth trying to find that "one" material that I needed to finish a mod. This time, we're showing much more restraint, so that means I'll be chasing all over the Commonwealth looking for that one material.