Another nice thing about giving btc versus giving a toaster or set of plates is that you are guiding the new couple to a thing that can actually help them in their financial future.
By giving them btc, they will need to learn about btc to spend/save it, and you know what they say about teaching someone to fish.
Well for me, I will just huy another set of plates or glasses or bed sheets because my bitcoin is very precious to me. I would just find time to reach them how to earn bitcoin rather than just giving it to them so that they will have their own bitcoin too and teach their soon to be kids.
A very nice idea indeed! This way, the couple will not only get awareness of new technology but help for lifetime. This is the best way to show them your love, care and best wishes. Also, this gift value keeps on enlarging. It is generous of you but in my case I am a miser. I will like to give an introduction of bitcoins. : P