Do you have, or know of an uninspiring gate-guardian aircraft? Make it come to life or at least giving the appearance of, by making all the nav/strobe/feature lighting actually work, via the use of LED arrays, an Arduino mini computer and an adapted TV remote control.
This aviation group do the business on an old F-16 (yes, a real full-size jet fighter)
http://www.youtube.com/channel/UCJgJ9wUD6hnZEqcGi6-T6vw
wilf_san