Every rock/mineral enthusiast I've ever known has an interesting geological paperweight used in their home or office.
I have many... as I'm sure most of us do. Currently I'm using this fossilized Ammonite specimen which was a given to me as a gift many years ago.
In the warmer months I like to have a breeze flowing through... this paperweight keeps my stuff down well and ain't too hard on the eyes.
Alright you rock nerds...
Let's see yours!!