Great ideas! I like using virtual jeopardy and
word competitions to engage seniors, residents and students in isolation/quarantine.
For example, you can give everyone a word and have them write down as many words as they can find/make with the letters in the word. Whoever finds the most words gets a token or star, for example. Choose a new word for the activity each day and then, at the end of the week, the person with the most token wins some sort of reward or prize.
I like this activity because it's a great way to exercise the brain and (re-)recognize common letter combos such as consonant and vowel pairs, patterns, prefixes, and suffixes.
I actually recently created an anagram solving guide detailing helpful strategies to reorganize words to form new words. You may find it beneficial when explaining the exercise and providing tips: https://www.crosswordsolver.com/anagram-solver/unscramble-letters-guide