Can you make cosmetics?

I want to make it so that the player has a cosmetic menu that gets "coins" based on play time, once every day they'll get a package of coins, and other users can send packages of coins to them in exchange for cosmetics. Like Fire Hat. Say someone wanted it and they didn't have enough, but another player had it and didn't care for it. The first player can send any amount of coins, and the other player could send the hat. I understand that mcreator can't do this on it's own if at all, so if anyone could steer me around for this, I would GREATLY appreciate it.