I am getting engaged. Any suggestions on a pandora charm to commemorate the proposal?

I will be popping the question in the next month or so. I am looking for a pandora charm for my girlfriend’s pandora bracelet that will commemorate the event. Any suggestions? I can’t even find good websites for pandora charms. She already has a heart that I got her when I got the bracelet, so something else??

how about a little ring? i know they have those, i had one, not from pandora but from another site. its like a mini ring with usually a big glass or crystal stone for the diamond..that would be great.
or if you want to get her a charm of where you proposed if its a destination.