what to do with a champagne cork?

[ampersandebeth.livejournal.com]

...and not just any champagne cork - two champagne corks from the bottles of "real" champagne (ie: from france). My boyfriend earned his PhD this past March, and I earned mine this past August (which is why there are two corks)

I'd like to do something special with them since I can't seem to throw them away (never mind the fact that each of us has a title, dissertation and a diploma to "remember" the event with)

any ideas?

thanks! :)