Kenneth07ex,
If you can have a month or so of patience, I am working on a group buy for a solid copper Astrolux A01 HERE it will be uncoated and price right now is only $20. With a Nichia 4000K 219B-V1 emitter and three modes, it should be a great light for one that is not “needed”, but only wanted on the keychain.
One nice thing about copper and some brass alloys, they have antimicrobial effects …