I forgot one thing from the list: noisy things (piezoelectric buzzer).
@Michael--cool! You are right--the kids could do more on their own with that. I like Arduino because of the programming part. These seem to be two different skills. But it looks like they are very complementary. Thank you for the suggestion.
I figure, if they can learn to read German they can surely learn a programming language
QuoteI figure, if they can learn to read German they can surely learn a programming languageI used to wonder if there was ever a German dialect of COBOL, where the verb came at the end.