MagicPenny is a Minecraft mod that adds an item called "love" to the game. When held in the player's inventory, love will lose durability and eventually break. If the player drops love from their inventory, and another player picks it up, both players will receive it in their inventory fully repaired.
Love is something if you give it away,
Give it away, give it away.
Love is something if you give it away,
You end up having more.
It's just like a magic penny,
Hold it tight and you won't have any.
Lend it, spend it, and you'll have so many
They'll roll all over the floor.
[...]
Words and music by Malvina Reynolds; copyright 1955 and 1958 Northern Music Corporation, renewed 1986. a.k.a. "Love Is Something." Despite the later copyright dates, this song was actually written while Malvina's daughter was at a junior high school dance, so around 1949. More info at https://people.wku.edu/charles.smith/MALVINA/mr101.htm (archive).