My 5-year-old finally asked me that question that many geek dads so look forward to: "Can I have a lightsaber?"Now, lightsabers aren't cheap, and true Jedi Knights make their own. But somehow I just can't see Master Yoda asking the younglings to whip out the soldering irons. I have a sneaky feeling the younglings get loaner sabers.Coruscant is (as you may be aware) in a galaxy far far away, and I…