Why does he have them? Who cares! Where does he keep them? Probably at Fluttershy’s place for the lulz. What does he do with them? I dunno, probably leave them in places that make ponies have awkward conversations about why they have a 21 inch manticore dong hanging out of their saddlebag while in the super fancy restaurant. Or like, toss them at people walking down the street. Or, y’know, use ’em on himself, but that’s expected and lame, be creative!
You have 30 minutes to draw and 15 to submit. Have fun!