I would make a rockin' Scarlet Witch.

Could I justify buying myself $40 thigh-or-knee-high red heeled boots?

Because they would be awesome, and I could have the most incredible Halloween costume next year if I wanted to go as any of a large number of superheroes, including, by not limited to, Wonder Woman, the Scarlet Witch, and Supergirl. They would also work with a devil costume. However... I'm sort of lacking of ideas in the non-Halloween-department where tall red heeled boots are a feasible costume choice.

I could go to comics conventions.

...As the Scarlet Witch? I may not be Heidi Klum but I think wandering around geek heaven in a Scarlet Witch costume might be mildy problematic. For my dignity.

I could just get a miniskirt. Except that would also harm my dignity.

But... but... so cool!