Jefferson Electric Fuse

My partner brought this home from his work site today, he had found a few behind a wall while renovating a house. He asked the owner if he could take one home for me, and he was ever so nice enough to oblige : ) I'm a lucky girl. I sure don't know much about fuses, or vintage/antique fuses for that matter, so any insight will be welcomed. He thinks it is from the forties or fifties. The company seems to have been open since 1915, and is still operating today.

So I now have three of these: any craft ideas of how I could display these with possible functionality? They're cool enough I want to see all the time, but not valuable, so I feel like I could make something cool out of them : )