If it can summon thunderstorms it would've justified the price, and will not make me feel embarassed to carry one in public.

anybody who makes fun of me will feel the wrath of a thundergod, to say the least.

although if we're talking about realistic replicas of superhero weapons I'd definitely choose a Green Lantern's power ring, or Sinestro's so it won't have that wussy yellow weakness...I bet those rings can make tea.