What are the rules for this PCG competition? Maybe I can submit that technic rocket launcher of mine, which is almost finished now.
On the topic of lego, I picked up a bunch of old space sets off ebay a few weeks ago: (those of you familiar with lego will probably recognize these)
6781 SP-Striker
6896 Celestial Forager
6956 Stellar Recon Voyager
6957 Solar Snooper
6981 Aerial Intruder
6984 Galactic Mediator
6989 Mega Core Magnetizer
All were new/MISB for about $300 total, which is a huge bargain considering how high the prices for these usually go up and I got them in the mail in the last few days. Life is good.

By the way that 6781 and the 6887 Allied Avenger would make excellent FS2 fighters IMO.