Does anyone have a list of Science fiction films that involve aliens from seventies till now? Specifically looking for a orb or star shaped object that can create cars helicopters tanks and stuff. Don't know the name though?

Sounds a bit like Automan's little
Buddy/sidekick, Cursor
From the 80's series,.

Automan

view clip (http://www.youtube.com/watch?v=oyiijO-zLuY&feature=player_detailpage#t=84s)