MadOlive's Vault Coin Pouch
This mods ads a new item called: "Coin Compacting Pouch".
You can put Vault Coins into the pouch to store an infinite amount. The pouch will automatically compact coins inserted into it into higher tier coins (bronze->silver->gold->platinum) if there is enough coins to do so.
It's basically a combination between the Soul Shard Pouch and Compacting Drawers, but only for Vault coins.
This is the crafting recipe:
REQUIRES VAULT HUNTER 1.18.2 TO WORK!