For my brother's master's degree in economics, I made these keychain to give together with the sugared almonds. It's a simple keychain with the euro symbol and a line indicating the stock market trend.

For those who have the same printer as me (Bambulab with AMS), I have also uploaded the .3mf file with the colors and the print profile used by me.

If you like it consider to leave like and a tip designer if want ;)