User blog comment:Gcheung28/21 Ways to Save the Day - Share Your Method/@comment-1038387-20150113193914

Invisible plane? No. Bracelets and lasso? Oh hell yes. :)

I'm gonna say the Lasso of Truth. Apart from an informal (and useless in court) interrogation device that doesn't require violence, it's also a pretty good weapon offensively and defensively. It's (nigh) unbreakable and can stretch (almost) infinitely. See Wonder Woman, Justice League: Flashpoint Paradox, Justice League: War and especially Justice League: Throne of Atlantis (out on iTunes today!)... she doesn't need a sword, like she has in the New 52. The lasso rocks.

Of course, in the 70s TV series, it had another power: to turn from a wafer thin useless gold-painted piece of string into an ordinary rope whenever she used it. Must be made by the same guy that made those handy heels that became flats when she had to run.