Present ideas?

[kel1234]

Two people we know are getting married next month. Unfortunately we are unable to go to the wedding for personal reasons that I'd prefer not to discuss. So the present needs to be something that is fairly easy to post (taking it to them isn't an option either as they live far from us, and the wedding is even further away).
Any ideas welcome? The bride is not a traditional bride (and doesn't really want the big wedding they are having, and would prefer something small, or even to not get married at all. This is all her own admission). Also anything Mr & Mrs Surname won't work as the bride is keeping her own name.
We were thinking a picture frame, with their first names at the top, and the 'on your wedding day, followed by the date' at the bottom.
But any other ideas welcome.

It's a nice thought but honestly, if I received something like that, even though I would be grateful, it would be consigned to a drawer with presents I have been given over the years but just aren't the kind of thing I like 😩 And because it's personalised it can't even be re-gifted 😂

A voucher is boring I know but would at least be used. How about a restaurant voucher for somewhere you know they like to eat? It wouldn't have to cover the whole cost but would be practical and possibly a nice thing to give after the whole big wedding the bride doesn't really want anyway!