May the fourth be with you, and all that. And for Star Wars Day, we’re focusing on one of the film’s less appreciated characters: step forward C-3PO, the shiny golden droid with the personality of a maître d’ who is absolutely not admitting you to the fancy restaurant, no, I’m afraid not, sir, not under any circumstances whatsoever. Threepio was in the news last month when the original head prop from The Empire Strikes Back fetched over $1 million at auction , making it one of the most expensive pieces of Star Wars -related memorabilia ever sold. (If you haven’t seen the film for a while, the head is separated from its owner after he wanders through the wrong door in Cloud City.) But if you thought you’d missed out on the chance to have a C-3PO head on your coffee table, never fear, because you can build your own—and it’ll even talk to you, if that’s what you really want.…