I just stumbled onto Carl’s Corner and thought I’d recommend it to parents with little ones. The games and activities seem designed for preschool to around grade one, depending on the child. There are lots of board games, activities, bingo sheets and other fun games designed to teach sight words, reading skills and other early elementary skills.
The one caveat is that this is a teacher site and many of the games are really designed for multiple kids of the same age. This would still work if you have young kids close in age, twins, a HS coop or otherwise work with several kids at once who could use these. It will be a bit trickier around here, since Jack is my only child who fits the age group now.