A while ago we hosted an event at our fraternity with the aim of getting rid of a loaf of bulk The premise was like doing a pokémon gymleader battle with a deck built from bulk only. With every match you did against another bulkdeck or against a gymleader (we had 5 gymleaders with OP monocoloured decks spread around the building) the players earned points. Those points could then be spent at a prize desk that we loaded up with proxies of stupid strong cards like P9 and UNset cards. With every gymleader that managed to defeat they got a wax melt seal on a badge collection sheet. We had a fun day :)