Mobile phones can be useful! We had an early Christmas meal and present opening on Sunday.it was me, DS and his 1 and 5 year olds visiting me, and his older children, their half siblings, who live near me. Oldest DGD,21, had given little brother a jigsaw which he thanked her for and put aside. Later, after DGD had gone I suggested he did the jigsaw which had far more pieces than he'd attempted before. After doing it with me he broke it and began again. When he'd almost finished I sent her a pic of rapt child bent over puzzle. Her reply was 'Aww, I can see he likes it!' The perfect thank you!
We'd done the pen and paper hovering for everyone but got the two older DGC to phone people immediately to thank them, job done. DS phoned for the little ones and got the 4 year old to speak to and thank his aunt etc. I remembered my nagging of DS years ago to get him to thank relatives and smiled quietly to myself.
Just as I was about to leave home for a week a lovely bouquet was delivered. A neighbour was pleased and astonished to get them (with explanation!) as I couldn't carry them and certainly didn't want to come home to dead flowers.I had to explain as I didn't want her to feel she had to give me a present in return.