You're not risking it: if this thing has anything to do with yesterday's events then you better keep all this latex away from people you care about.
You snap a picture of the items with your phone and then carefully put them back in the box.
Making a listing on Ebay, you set a rather low price; you couldn't bother with researching the fetish market and right now you just need to get rid of this unwelcome anonymous present.
Soon enough, all the contents of the box are bought by someone. You exchange some emails with them, explaining that this is a custom-made outfit made by a secretive clothing designer who tried their hand at fetish fashion. 'The reason why it costs so little' — you write — 'is because we got all the measurements wrong, making the dress impossible to put on anyone with wide shoulders'.
You ship the box via a courier service.
Days after that, you're still worried that one morning you'd find that creepy box waiting on the doorstep again.
But it doesn't happen. Weeks pass, and you're seemingly safe.
Yet every now and then, you think:
'Who'd need this kind of an outfit?'