Is the cell your talking about the one where there are Super Mutants or Enclave fighting some Raiders and you just sort walk into the middle of it at some sort of train station?
No. Just a short ways from Farragut Station, where that path to Chevy Chase is and across the bridge from the Super Duper Mart, there's alot of cars in this roadway, and there's a grenade bouquet above them all. If you go down right to the end and turn left from there, you'll come across a Super Mutant garrison. It's just down from that Shelter interior where some maniac had placed a bunch of plungers going up the walls, and you can see that he somehow made it right up to the ceiling. Then just up from there is a single Talon mercenary with a robot on patrol there. The items are right in the garrison in a pile of car parts, mostly tires IIRC, next to a wall.
Well I suppose I could add Teddy Bears right now, but it would take longer to get the next release.
Well if you're planning on making a new version anyway, you may as well add a new item to it. At least there aren't 10,000 Teddy Bears like there are for Tin Cans. I admire your patience placing all those items, I get so frustrated trying to work around all the area and lighting effects in the game. It can be pretty hard to reach an item when there's some mist or ambient light source in your way.
I've also considered not getting it all (I'm not a fan of Steam)
That's crossed my mind as well. I don't like anything to do with being forced to go online for a game, especially not activating it. Ironic that they made things more inconvenient for the honest user and yet there was still a pirate copy available within a day of release.