We attended a wedding recently. At the reception, while the younger set danced, a group of us retired folks pulled chairs together and chatted. One topic (since we were all there) were wedding gifts and "thank you" cards. We lamented that the genuine, handwritten thank you seems to have gone the way of the 5-cent beer.
Some recalled weddings where no thank you at all was received, others got text messages. Some got an email from the bridal registry when a gift was purchased.
.
One couple had an interesting gift giving strategy. They would give $100 cash. If they got an old school, genuine thank you, they would gift a second $100 on the couple's first anniversary. Anything else the second gift didn't happen.
The group kinda liked that strategy.
There are some flaws in it, but it was good conversation for the drive home.