We text a joke every day to my parents. It just started as more of a one off as my daughter had a joke, but it’s taken on a life of it’s own.
It’s a good activity to find a joke for them everyday. If my daughter types it, they get emojis too! … Sometimes lots of emojis. : )
It gives them a smile and keeps contact, especially when kids won’t talk on the phone, Skype, etc.