Share 'The First/One Disc Question: First/One Disc to Buy to get the people in our lives into the game?'

Hello, enjoying the conversations on here and had this thought, we all love this game and want it to grow. But, I am finding it can be tricky introducing friends and loved ones...overcoming some negative preconceived ideas, learning what discs not to give out around water... :-) , but with ALL the discs out there...am seeking wisdom, especially in this season of giving.  So, what ONE disc could…