You can store all sorts of things in chests and whatnot, but the one thing unable to be stored in Minecraft was your xp levels. Well, now you can. Simply right click without a bottle in your hand on a jar to deposit levels, and right click with a bottle on a jar to get a bottle o' enchanting. The max storage is 30 levels. The crafting recipe for the jar is above in the photos. Plus, when you break a jar, it keeps its contents just like a shulker box, so you can carry it with you or put it in chest.
I hope you enjoy!
-you do not have to have any xp in order to deposit
-pulls from nearest player
Please report any other bugs in the comment section below.