For those of you looking for a really cool topper for your Stern Star Trek pin check out this model by Revell:
http://www.amazon.com/Star-NCC-1701-Enterprise-movie-version/dp/B00BECI42Y/ref=pd_sim_t_7
Revell Star Trek Into Darkness USS Enterprise.jpg
What's nice about this model is the size is perfect and it can run off battery or AC adapter.
These guys also make an LED light kit and decal set for that specific model: