Fanny Packs/Belts - Extra Storage, Portable Jukebox, and more!

An idea for a new extra equipable you can put on your character that I have is Fanny Packs/belts! In your inventory there's extra space next to the "Shield" equipable area. There could be an extra slot next to it for you to equip some item in your belt area such as a Fanny Pack/other item. My ideas include 3 stages of fanny packs, one that can hold five items, one could hold 10 items, and one that could hold 15 items. Fanny packs could be crafted with 8 leather surrounding either gold, iron, or diamond respectively and can be dyed. Others include a portable jukebox, furnace, crafting table, or any of the crafting blocks. The idea is you can only have one of these at a time and they can be instantly interchanged by switching the items around. They can function as normally such as the jukebox playing the disc you put in at max volume and the furnace always smelting something as long as it has coal or some sort of fuel alongside an item to smelt. To get to the fanny packs/crafting blocks/jukebox you would access them by either pressing a set hotkey or by clicking a button next to the section you equipped it in your inventory. I'll go in-depth the jukebox which will throw the disc when it runs out of time back into your inventory if you have enough space or it will stay in the slot it was put in inside the menu for the jukebox if you have no inventory space. Another way it could work is you could put in 5 discs at the same time, they will cycle infinitely unless taken out.