My Gran has had to move from her little flat that she's lived in for about 10 years (it's being knocked down and re-built) so she is moving to this nice little bungalow with her own garden. She actually moved last Friday and I am still waiting for the address to send her a nice welcome home card. It sucks for me because that is one address I've NEVER had to think about. I don't know why but I will always remember that address.
We choose to send her a sweet, subtle picture of a tree just coming into blossom as the main image on the card. Hopefully she will really like it there.