This is honestly what I do to the group of people that do DnD when I randomly pop in on them and sell them the most outlandish and OP shit imaginable. Thing such as....
The Infinity Bag: Anything you put into the bag then becomes infinite, ANYTHING!!! You name it, gold, weapons, food, EVEN PEOPLE. Yes, people (an infinite number of clones to fight for you at your disposal!!!)
The Tactical Nuke: Its exactly what it sounds like, but in order to detonate properly you must roll a nat 20
The Shield of Shielding (yes, you heard that right gravity falls fans)
Lightsaber: it's self explanatory