I built a wall... It is a glorious wall, to keep out all the "bad dudes" where you can build your hippy robots in peace! ...Sorry, I could not help myself. ;)

But yes, I put up a shipping container wall around Sunshine Tidings Co-op, and set up a few basics, like turrets, pets, contraptions to break down your junk and corpses, a robot workbench, power, minor food and water, ect. I like having walls around my settlements, but they are a pain, and time consuming to set up, so here is my basic templet for one that I feel is pretty lore friendly, and natural. ...Though maybe a railing around the wall might have been smart now that I think about it... ;) It was loosely inspired by something out of the other games and one of the Mad Max movies.

Most Important, before everything will work, you will not only need to rewire the power, but also need to pick up, and replace any of the 'snapped' power items, such as the contraptions conduits and devices, so that the game recognizes they are snapped. You just need to pick up every other snapped item, and then let go (tab/esc), so it goes back where it was. Each connection needs to get refreshed before it will all work.

I recommend you scrap most of what you can before importing this, especially around the edge of the settlement, toilets in the outhouses, the plywood door on the house without a back, and the beds that came with the place (I replaced them).

It 'requires' the Contraptions, Vault-Tec, Automatron, and Wasteland Workshop DLCs, as well as the following mods.

Homemaker
Vanilla Extensions
SLR (Stairs, Ladders, Ramps)
Craftable Plywood
Manufacturing Extended(The Soylent Green Add-on is also recommended, but not required in any way)
MOAR Turrets

You could possibly do okay without the manufacturing extended and moar turrets mods, but would lose out on those pieces. Sometimes when I have imported blueprints without the needed mods those items did not show, other times the game crashed. I suppose it depends on what the missing items are.

Some people are opposed to scrapping corpses, or may not wish to have their workbench emptied every time they load the cell. If so, either scrap those contraptions, or wire in a switch when you are reattaching the wires. Personally, I like to keep my workbenches empty, to lesson the attacks, and breaking down any junk is a nice bonus. 

There are a number of animals, for extra defense and happiness, don't import them, if you do not want them.

You can run around on top of the entire wall, and there are several ways up around the settlement from the inside, and a few hidden compartments. The screen shot required me to zoom out so far it started to lose a lot of detail, but that helps add to the 'surprise', not that it is anything major, don't get too excited... XD

I plan to build more in here at some point (in the north farming plot), but I thought that some people might like the idea of a quick build wall by itself, and so I tried to keep the requirements pretty minimal.

I hope you like it.

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My  other Blueprints
Somerville Treehouse City
Lagman's Alley (My Overbuilt Hangman's Aley Rooftop Base)
Kinsport Lighthouse Build
Outpost Zimonja Maze 
JamaicaPlain City Mall (Vanilla and DLC only Versions)