I have only just discovered the wonder that is Jumpstart and Jumpstart 2022 and I wanted to ensure that I could reuse the boosters. Each box will hold a jumpstart booster pack (double sleeved) with a slot to display the theme card on the front. If, like me, you intend to buy a booster box, a couple of trays will be enough to hold all 24 booster packs.
I imagine this would also work well if you wanted to make any of your own reusable booster packs.