Here's an easy mini kit:
After traveling to 2015 London for the first time, you may notice some mannequins in the store windows around you. To free them, you need to destroy 3 glowing spheres.
The first is by the Tardis station you arrive from. Use the Doctor's ability to break glass at a nearby phone booth.
The second is at a magic marker. Use Gandalf to find this sphere.
The final one is in a sewer covered by a silver manhole. Use K-9 to destroy it. After the third one you destroy, you automatically collect the mini kit.
Note: The mannequins want you gone after destroying a sphere. Be careful.