This looks SOOOOOO COOL! I love yoyo bags. During the last boom, there were yoyo bags, slings, and more fanny packs than you can shake a stick at. Okay, so fanny packs were still a cringe worthy accessory unless you were a pro wrestler, but yeah.
I found this on Facebook. It can hold 24 yoyos and a few choice gadgets. Maybe at Nationals?