Chapter 7: The Resistance - Resistance Base
Therei's a lot to do at the base before you can head out, and getting the minikits is on the list.
To the front left is a crate that you can cut open with a lightsaber.
Build your own minikit with the parts inside.
Minikit #2 - Free Play Mode
To the left of the main doors is a rebel access terminal. Use it to open the blast doors to the left.
Use the dark force to break open the crates.
You'll find the parts for the minikit inside.
For the next minikit, you need to reconstruct three droids. The parts for the first one can be released by using the grapple plug on the left.
After opening the main doors and going into the corridor beyond, use the rebel access terminal on the left to get parts for the second droid.
Destroy the large beige crate to the left of the last door for the parts to make the final droid.
Minikit #4 - Free Play Mode
As part of the story, you'll need to open the door to the frozen room.
Once inside, use a Flametrooper to thaw the minikit.
After opening the pressure plate door, head to the back right of the room.
Have BB-8 do his thing with the socket.
Grab the minikit from the centre of the room, and we're done.