When I got married I gave my groomsmen some really nice personalized money clips. I had their names ( nicknames ) engraved on them but also included a little saying that was personal between me and each individual.
For example, I had this engraved on my buddy Sean's clip:
"I've got my bail money"
I picked that because he used to always say that before we hit the bars. ( we got arrested a few times for fighting while getting sh*tfaced at bars )